Finding the Fourth Proportional to 15,517,437.43, 21,414,728.05 and 8,641,919.49
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Solution
The fourth proportional to 15,517,437.43, 21,414,728.05 and 8,641,919.49 is: 11,926,218.91
Step by Step Solution
- Step 1: Write the proportion equation
15,517,437.43 : 21,414,728.05 = 8,641,919.49 : x - Step 2: Convert to fraction form
15,517,437.43/21,414,728.05 = 8,641,919.49/x - Step 3: Cross multiply
15,517,437.43x = 21,414,728.05 × 8,641,919.49 - Step 4: Simplify right side
15,517,437.43x = 185,064,355,708,344.72 - Step 5: Solve for x
x = 185,064,355,708,344.72/15,517,437.43 - Step 6: Final answer
x = 11,926,218.91
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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.