Home / 31,372.20-47,072.85-11,657.61

Finding the Fourth Proportional to 31,372.20, 47,072.85 and 11,657.61

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Solution

The fourth proportional to 31,372.20, 47,072.85 and 11,657.61 is: 17,491.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,372.20 : 47,072.85 = 11,657.61 : x
  2. Step 2: Convert to fraction form
    31,372.20/47,072.85 = 11,657.61/x
  3. Step 3: Cross multiply
    31,372.20x = 47,072.85 × 11,657.61
  4. Step 4: Simplify right side
    31,372.20x = 548,756,926.89
  5. Step 5: Solve for x
    x = 548,756,926.89/31,372.20
  6. Step 6: Final answer
    x = 17,491.82

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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.