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Finding the Fourth Proportional to 18,471.48, 27,711.34 and 7,383.38

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Solution

The fourth proportional to 18,471.48, 27,711.34 and 7,383.38 is: 11,076.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,471.48 : 27,711.34 = 7,383.38 : x
  2. Step 2: Convert to fraction form
    18,471.48/27,711.34 = 7,383.38/x
  3. Step 3: Cross multiply
    18,471.48x = 27,711.34 × 7,383.38
  4. Step 4: Simplify right side
    18,471.48x = 204,603,353.53
  5. Step 5: Solve for x
    x = 204,603,353.53/18,471.48
  6. Step 6: Final answer
    x = 11,076.72

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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.