Finding the Fourth Proportional to 28,787,129.97, 39,726,142.90 and 15,734,381.32
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Solution
The fourth proportional to 28,787,129.97, 39,726,142.90 and 15,734,381.32 is: 21,713,393.50
Step by Step Solution
- Step 1: Write the proportion equation
28,787,129.97 : 39,726,142.90 = 15,734,381.32 : x - Step 2: Convert to fraction form
28,787,129.97/39,726,142.90 = 15,734,381.32/x - Step 3: Cross multiply
28,787,129.97x = 39,726,142.90 × 15,734,381.32 - Step 4: Simplify right side
28,787,129.97x = 625,066,280,761,410.62 - Step 5: Solve for x
x = 625,066,280,761,410.62/28,787,129.97 - Step 6: Final answer
x = 21,713,393.50
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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.