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Finding the Fourth Proportional to 31,607.68, 47,414.28 and 8,234.08

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Solution

The fourth proportional to 31,607.68, 47,414.28 and 8,234.08 is: 12,351.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,607.68 : 47,414.28 = 8,234.08 : x
  2. Step 2: Convert to fraction form
    31,607.68/47,414.28 = 8,234.08/x
  3. Step 3: Cross multiply
    31,607.68x = 47,414.28 × 8,234.08
  4. Step 4: Simplify right side
    31,607.68x = 390,412,974.66
  5. Step 5: Solve for x
    x = 390,412,974.66/31,607.68
  6. Step 6: Final answer
    x = 12,351.84

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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.