18.86 is what percent of 13 - 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 13 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 13, so we can write it down as 100%=13.
4. We know, that x% equals 18.86 of the output value, so we can write it down as x%=18.86.
5. Now we have two simple equations:
1) 100%=13
2) x%=18.86
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%=13/18.86
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 18.86 is what percent of 13

100%/x%=13/18.86
(100/x)*x=(13/18.86)*x       - we multiply both sides of the equation by x
100=0.68928950159067*x       - we divide both sides of the equation by (0.68928950159067) to get x
100/0.68928950159067=x
145.07692307692=x
x=145.07692307692

now we have:
18.86 is 145.07692307692% of 13