Finding the Fourth Proportional to 15,420,115.97, 21,279,760.18 and 8,544,598.03
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Solution
The fourth proportional to 15,420,115.97, 21,279,760.18 and 8,544,598.03 is: 11,791,545.36
Step by Step Solution
- Step 1: Write the proportion equation
15,420,115.97 : 21,279,760.18 = 8,544,598.03 : x - Step 2: Convert to fraction form
15,420,115.97/21,279,760.18 = 8,544,598.03/x - Step 3: Cross multiply
15,420,115.97x = 21,279,760.18 × 8,544,598.03 - Step 4: Simplify right side
15,420,115.97x = 181,826,996,912,900.44 - Step 5: Solve for x
x = 181,826,996,912,900.44/15,420,115.97 - Step 6: Final answer
x = 11,791,545.36
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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.