Home / 31,981.50-47,909.91-19,470.49

Finding the Fourth Proportional to 31,981.50, 47,909.91 and 19,470.49

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Solution

The fourth proportional to 31,981.50, 47,909.91 and 19,470.49 is: 29,167.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,981.50 : 47,909.91 = 19,470.49 : x
  2. Step 2: Convert to fraction form
    31,981.50/47,909.91 = 19,470.49/x
  3. Step 3: Cross multiply
    31,981.50x = 47,909.91 × 19,470.49
  4. Step 4: Simplify right side
    31,981.50x = 932,829,423.56
  5. Step 5: Solve for x
    x = 932,829,423.56/31,981.50
  6. Step 6: Final answer
    x = 29,167.78

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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.