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Finding the Fourth Proportional to 18,019.20, 24,874.08 and 10,947.88

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Solution

The fourth proportional to 18,019.20, 24,874.08 and 10,947.88 is: 15,112.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,019.20 : 24,874.08 = 10,947.88 : x
  2. Step 2: Convert to fraction form
    18,019.20/24,874.08 = 10,947.88/x
  3. Step 3: Cross multiply
    18,019.20x = 24,874.08 × 10,947.88
  4. Step 4: Simplify right side
    18,019.20x = 272,318,442.95
  5. Step 5: Solve for x
    x = 272,318,442.95/18,019.20
  6. Step 6: Final answer
    x = 15,112.68

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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.