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Finding the Fourth Proportional to 18,000,978.75, 24,841,416.11 and 9,741,040.18

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Solution

The fourth proportional to 18,000,978.75, 24,841,416.11 and 9,741,040.18 is: 13,442,670.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,000,978.75 : 24,841,416.11 = 9,741,040.18 : x
  2. Step 2: Convert to fraction form
    18,000,978.75/24,841,416.11 = 9,741,040.18/x
  3. Step 3: Cross multiply
    18,000,978.75x = 24,841,416.11 × 9,741,040.18
  4. Step 4: Simplify right side
    18,000,978.75x = 241,981,232,344,800.56
  5. Step 5: Solve for x
    x = 241,981,232,344,800.56/18,000,978.75
  6. Step 6: Final answer
    x = 13,442,670.85

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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.