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Finding the Fourth Proportional to 18,490.28, 27,727.11 and 8,632.44

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Solution

The fourth proportional to 18,490.28, 27,727.11 and 8,632.44 is: 12,944.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,490.28 : 27,727.11 = 8,632.44 : x
  2. Step 2: Convert to fraction form
    18,490.28/27,727.11 = 8,632.44/x
  3. Step 3: Cross multiply
    18,490.28x = 27,727.11 × 8,632.44
  4. Step 4: Simplify right side
    18,490.28x = 239,352,613.45
  5. Step 5: Solve for x
    x = 239,352,613.45/18,490.28
  6. Step 6: Final answer
    x = 12,944.78

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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.