What is 77.7 percent of 19.425 - 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 19.425 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 19.425 is 100%, so we can write it down as 19.425=100%.
4. We know, that x is 77.7% of the output value, so we can write it down as x=77.7%.
5. Now we have two simple equations:
1) 19.425=100%
2) x=77.7%
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:
19.425/x=100%/77.7%
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 77.7% of 19.425

19.425/x=100/77.7
(19.425/x)*x=(100/77.7)*x       - we multiply both sides of the equation by x
19.425=1.2870012870013*x       - we divide both sides of the equation by (1.2870012870013) to get x
19.425/1.2870012870013=x
15.093225=x
x=15.093225

now we have:
77.7% of 19.425=15.093225