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Finding the Fourth Proportional to 15,163.92, 20,924.52 and 8,449.02

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Solution

The fourth proportional to 15,163.92, 20,924.52 and 8,449.02 is: 11,658.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,163.92 : 20,924.52 = 8,449.02 : x
  2. Step 2: Convert to fraction form
    15,163.92/20,924.52 = 8,449.02/x
  3. Step 3: Cross multiply
    15,163.92x = 20,924.52 × 8,449.02
  4. Step 4: Simplify right side
    15,163.92x = 176,791,687.97
  5. Step 5: Solve for x
    x = 176,791,687.97/15,163.92
  6. Step 6: Final answer
    x = 11,658.71

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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.