Finding the Fourth Proportional to 21,601,737.13, 29,807,948.92 and 12,781,458.84
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Solution
The fourth proportional to 21,601,737.13, 29,807,948.92 and 12,781,458.84 is: 17,636,964.56
Step by Step Solution
- Step 1: Write the proportion equation
21,601,737.13 : 29,807,948.92 = 12,781,458.84 : x - Step 2: Convert to fraction form
21,601,737.13/29,807,948.92 = 12,781,458.84/x - Step 3: Cross multiply
21,601,737.13x = 29,807,948.92 × 12,781,458.84 - Step 4: Simplify right side
21,601,737.13x = 380,989,072,161,924.12 - Step 5: Solve for x
x = 380,989,072,161,924.12/21,601,737.13 - Step 6: Final answer
x = 17,636,964.56
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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.