Here we will show you how to convert the ratio 18:19 to a fraction. In other words, we will convert the ratio of 18:19 to a fraction with a numerator and a denominator.
There is actually more than one answer to this problem, depending on what kind of ratio it is. 18:19 can either be a Part-to-Part ratio or a Part-to-Whole ratio. We will describe and convert both types of ratios to fractions.
Part-to-Part
A part-to-part ratio is the most common form of ratio. If the ratio 18:19 is a part-to-part ratio, it means that there are 18 of something and 19 of something else with a total of 37.
To convert a part-to-part ratio such as 18:19 as a fraction, you make the left side of the colon the numerator and the total the denominator:
18:19 → 18/37
Since there are 19 of something else, you can also make another fraction where the right side of the colon is the numerator and once again the total is the denominator:
18:19 → 19/37
Part-to-Whole
A part-to-whole ratio of 18:19 means that there are 18 of something and the total is 19. It also means that there is 1 of something else. To convert a Part-to-Whole ratio such as 18:19, you replace the colon with a fraction bar to get this answer:
18:19 → 18/19
Since there is 1 of something else and still the total of 19, you can also make a 2nd fraction like this:
18:19 → 1/19
Ratio to Fraction Converter
Use this tool to convert another ratio to a fraction.
18:20 as a fraction
Here is the next ratio on our list that we have converted to a fraction.