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Finding the Fourth Proportional to 18,238.73, 27,358.10 and 4,387.73

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Solution

The fourth proportional to 18,238.73, 27,358.10 and 4,387.73 is: 6,581.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,238.73 : 27,358.10 = 4,387.73 : x
  2. Step 2: Convert to fraction form
    18,238.73/27,358.10 = 4,387.73/x
  3. Step 3: Cross multiply
    18,238.73x = 27,358.10 × 4,387.73
  4. Step 4: Simplify right side
    18,238.73x = 120,039,934.17
  5. Step 5: Solve for x
    x = 120,039,934.17/18,238.73
  6. Step 6: Final answer
    x = 6,581.60

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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.