Home / 31,973.97-47,961.12-8,279.85

Finding the Fourth Proportional to 31,973.97, 47,961.12 and 8,279.85

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Solution

The fourth proportional to 31,973.97, 47,961.12 and 8,279.85 is: 12,419.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,973.97 : 47,961.12 = 8,279.85 : x
  2. Step 2: Convert to fraction form
    31,973.97/47,961.12 = 8,279.85/x
  3. Step 3: Cross multiply
    31,973.97x = 47,961.12 × 8,279.85
  4. Step 4: Simplify right side
    31,973.97x = 397,110,879.43
  5. Step 5: Solve for x
    x = 397,110,879.43/31,973.97
  6. Step 6: Final answer
    x = 12,419.82

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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.