Home / 11,791.20-16,279.44-7,319.76

Finding the Fourth Proportional to 11,791.20, 16,279.44 and 7,319.76

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Solution

The fourth proportional to 11,791.20, 16,279.44 and 7,319.76 is: 10,105.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,791.20 : 16,279.44 = 7,319.76 : x
  2. Step 2: Convert to fraction form
    11,791.20/16,279.44 = 7,319.76/x
  3. Step 3: Cross multiply
    11,791.20x = 16,279.44 × 7,319.76
  4. Step 4: Simplify right side
    11,791.20x = 119,161,593.73
  5. Step 5: Solve for x
    x = 119,161,593.73/11,791.20
  6. Step 6: Final answer
    x = 10,105.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.