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Finding the Fourth Proportional to 18,500.73, 27,750.48 and 8,626.42

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Solution

The fourth proportional to 18,500.73, 27,750.48 and 8,626.42 is: 12,939.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,500.73 : 27,750.48 = 8,626.42 : x
  2. Step 2: Convert to fraction form
    18,500.73/27,750.48 = 8,626.42/x
  3. Step 3: Cross multiply
    18,500.73x = 27,750.48 × 8,626.42
  4. Step 4: Simplify right side
    18,500.73x = 239,387,295.68
  5. Step 5: Solve for x
    x = 239,387,295.68/18,500.73
  6. Step 6: Final answer
    x = 12,939.34

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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.