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Finding the Fourth Proportional to 20,372.72, 30,561 and 6,332.92

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Solution

The fourth proportional to 20,372.72, 30,561 and 6,332.92 is: 9,499.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,372.72 : 30,561 = 6,332.92 : x
  2. Step 2: Convert to fraction form
    20,372.72/30,561 = 6,332.92/x
  3. Step 3: Cross multiply
    20,372.72x = 30,561 × 6,332.92
  4. Step 4: Simplify right side
    20,372.72x = 193,540,368.12
  5. Step 5: Solve for x
    x = 193,540,368.12/20,372.72
  6. Step 6: Final answer
    x = 9,499.98

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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.