What proportion is 18 out of 20?

What proportion is 18 out of 20? In other words, what proportion is 18 out of 20 as a percentage? More specifically, if 18 is the part, and 20 is the whole, what will the part be if the whole is 100?

Below is a more straightforward illustration showing you what we mean when we say we want find the proportion of 18 out of 20 as a percentage:

18 out of 20 = P out of 100

The above problem can be made into an equation and can be solved like this:

P/100 = 18/20
P = 1800/20
P = 90

Now we know that the proportion of 18 out of 20 is the same as 90 out of 100, which means that we have our answer:

What proportion is 18 out of 20? = 90%

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