Home / 31,691.50-47,534.15-8,317.94

Finding the Fourth Proportional to 31,691.50, 47,534.15 and 8,317.94

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Solution

The fourth proportional to 31,691.50, 47,534.15 and 8,317.94 is: 12,476.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,691.50 : 47,534.15 = 8,317.94 : x
  2. Step 2: Convert to fraction form
    31,691.50/47,534.15 = 8,317.94/x
  3. Step 3: Cross multiply
    31,691.50x = 47,534.15 × 8,317.94
  4. Step 4: Simplify right side
    31,691.50x = 395,385,928.39
  5. Step 5: Solve for x
    x = 395,385,928.39/31,691.50
  6. Step 6: Final answer
    x = 12,476.09

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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.