Home / 31,876.13-47,819.66-9,691.75

Finding the Fourth Proportional to 31,876.13, 47,819.66 and 9,691.75

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Solution

The fourth proportional to 31,876.13, 47,819.66 and 9,691.75 is: 14,539.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,876.13 : 47,819.66 = 9,691.75 : x
  2. Step 2: Convert to fraction form
    31,876.13/47,819.66 = 9,691.75/x
  3. Step 3: Cross multiply
    31,876.13x = 47,819.66 × 9,691.75
  4. Step 4: Simplify right side
    31,876.13x = 463,455,902.25
  5. Step 5: Solve for x
    x = 463,455,902.25/31,876.13
  6. Step 6: Final answer
    x = 14,539.28

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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.