Finding the Fourth Proportional to 28,301,581.44, 39,057,564.96 and 15,915,571.20
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Solution
The fourth proportional to 28,301,581.44, 39,057,564.96 and 15,915,571.20 is: 21,964,265.75
Step by Step Solution
- Step 1: Write the proportion equation
28,301,581.44 : 39,057,564.96 = 15,915,571.20 : x - Step 2: Convert to fraction form
28,301,581.44/39,057,564.96 = 15,915,571.20/x - Step 3: Cross multiply
28,301,581.44x = 39,057,564.96 × 15,915,571.20 - Step 4: Simplify right side
28,301,581.44x = 621,623,456,019,505.12 - Step 5: Solve for x
x = 621,623,456,019,505.12/28,301,581.44 - Step 6: Final answer
x = 21,964,265.75
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.