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Finding the Fourth Proportional to 8,959.92, 13,429.92 and 6,761.52

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Solution

The fourth proportional to 8,959.92, 13,429.92 and 6,761.52 is: 10,134.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,959.92 : 13,429.92 = 6,761.52 : x
  2. Step 2: Convert to fraction form
    8,959.92/13,429.92 = 6,761.52/x
  3. Step 3: Cross multiply
    8,959.92x = 13,429.92 × 6,761.52
  4. Step 4: Simplify right side
    8,959.92x = 90,806,672.68
  5. Step 5: Solve for x
    x = 90,806,672.68/8,959.92
  6. Step 6: Final answer
    x = 10,134.76

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1.5x scale

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.