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Finding the Fourth Proportional to 18,082.60, 27,123.90 and 15,231.40

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Solution

The fourth proportional to 18,082.60, 27,123.90 and 15,231.40 is: 22,847.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,082.60 : 27,123.90 = 15,231.40 : x
  2. Step 2: Convert to fraction form
    18,082.60/27,123.90 = 15,231.40/x
  3. Step 3: Cross multiply
    18,082.60x = 27,123.90 × 15,231.40
  4. Step 4: Simplify right side
    18,082.60x = 413,134,970.46
  5. Step 5: Solve for x
    x = 413,134,970.46/18,082.60
  6. Step 6: Final answer
    x = 22,847.10

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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.