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Finding the Fourth Proportional to 15,163.92, 20,923.44 and 8,449.38

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Solution

The fourth proportional to 15,163.92, 20,923.44 and 8,449.38 is: 11,658.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,163.92 : 20,923.44 = 8,449.38 : x
  2. Step 2: Convert to fraction form
    15,163.92/20,923.44 = 8,449.38/x
  3. Step 3: Cross multiply
    15,163.92x = 20,923.44 × 8,449.38
  4. Step 4: Simplify right side
    15,163.92x = 176,790,095.47
  5. Step 5: Solve for x
    x = 176,790,095.47/15,163.92
  6. Step 6: Final answer
    x = 11,658.60

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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.