Finding the Fourth Proportional to 15,517,437.92, 21,414,728.74 and 8,641,920
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Solution
The fourth proportional to 15,517,437.92, 21,414,728.74 and 8,641,920 is: 11,926,219.62
Step by Step Solution
- Step 1: Write the proportion equation
15,517,437.92 : 21,414,728.74 = 8,641,920 : x - Step 2: Convert to fraction form
15,517,437.92/21,414,728.74 = 8,641,920/x - Step 3: Cross multiply
15,517,437.92x = 21,414,728.74 × 8,641,920 - Step 4: Simplify right side
15,517,437.92x = 185,064,372,592,780.78 - Step 5: Solve for x
x = 185,064,372,592,780.78/15,517,437.92 - Step 6: Final answer
x = 11,926,219.62
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1.5x scale
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.