38.64 is what percent of 811.92 - 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 811.92 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 811.92, so we can write it down as 100%=811.92.
4. We know, that x% equals 38.64 of the output value, so we can write it down as x%=38.64.
5. Now we have two simple equations:
1) 100%=811.92
2) x%=38.64
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%=811.92/38.64
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 38.64 is what percent of 811.92

100%/x%=811.92/38.64
(100/x)*x=(811.92/38.64)*x       - we multiply both sides of the equation by x
100=21.012422360248*x       - we divide both sides of the equation by (21.012422360248) to get x
100/21.012422360248=x
4.7590895654744=x
x=4.7590895654744

now we have:
38.64 is 4.7590895654744% of 811.92