27 is what percent of 213.9 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 213.9 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 213.9, so we can write it down as 100%=213.9.
4. We know, that x% equals 27 of the output value, so we can write it down as x%=27.
5. Now we have two simple equations:
1) 100%=213.9
2) x%=27
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=213.9/27
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 27 is what percent of 213.9

100%/x%=213.9/27
(100/x)*x=(213.9/27)*x       - we multiply both sides of the equation by x
100=7.9222222222222*x       - we divide both sides of the equation by (7.9222222222222) to get x
100/7.9222222222222=x
12.622720897616=x
x=12.622720897616

now we have:
27 is 12.622720897616% of 213.9