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Finding the Fourth Proportional to 31,474, 47,211 and 9,586

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Solution

The fourth proportional to 31,474, 47,211 and 9,586 is: 14,379

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,474 : 47,211 = 9,586 : x
  2. Step 2: Convert to fraction form
    31,474/47,211 = 9,586/x
  3. Step 3: Cross multiply
    31,474x = 47,211 × 9,586
  4. Step 4: Simplify right side
    31,474x = 452,564,646
  5. Step 5: Solve for x
    x = 452,564,646/31,474
  6. Step 6: Final answer
    x = 14,379

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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.