Finding the Fourth Proportional to 15,690,949.29, 21,652,957.74 and 8,626,491.09
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Solution
The fourth proportional to 15,690,949.29, 21,652,957.74 and 8,626,491.09 is: 11,904,254.08
Step by Step Solution
- Step 1: Write the proportion equation
15,690,949.29 : 21,652,957.74 = 8,626,491.09 : x - Step 2: Convert to fraction form
15,690,949.29/21,652,957.74 = 8,626,491.09/x - Step 3: Cross multiply
15,690,949.29x = 21,652,957.74 × 8,626,491.09 - Step 4: Simplify right side
15,690,949.29x = 186,789,046,973,124.06 - Step 5: Solve for x
x = 186,789,046,973,124.06/15,690,949.29 - Step 6: Final answer
x = 11,904,254.08
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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.