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Finding the Fourth Proportional to 20,251.53, 30,369.96 and 8,565.66

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Solution

The fourth proportional to 20,251.53, 30,369.96 and 8,565.66 is: 12,845.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,251.53 : 30,369.96 = 8,565.66 : x
  2. Step 2: Convert to fraction form
    20,251.53/30,369.96 = 8,565.66/x
  3. Step 3: Cross multiply
    20,251.53x = 30,369.96 × 8,565.66
  4. Step 4: Simplify right side
    20,251.53x = 260,138,751.57
  5. Step 5: Solve for x
    x = 260,138,751.57/20,251.53
  6. Step 6: Final answer
    x = 12,845.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.