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Finding the Fourth Proportional to 18,660.92, 27,984.08 and 8,265.38

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Solution

The fourth proportional to 18,660.92, 27,984.08 and 8,265.38 is: 12,394.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,660.92 : 27,984.08 = 8,265.38 : x
  2. Step 2: Convert to fraction form
    18,660.92/27,984.08 = 8,265.38/x
  3. Step 3: Cross multiply
    18,660.92x = 27,984.08 × 8,265.38
  4. Step 4: Simplify right side
    18,660.92x = 231,298,935.89
  5. Step 5: Solve for x
    x = 231,298,935.89/18,660.92
  6. Step 6: Final answer
    x = 12,394.83

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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.