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Finding the Fourth Proportional to 18,061.50, 27,082.50 and 8,195.40

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Solution

The fourth proportional to 18,061.50, 27,082.50 and 8,195.40 is: 12,288.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,061.50 : 27,082.50 = 8,195.40 : x
  2. Step 2: Convert to fraction form
    18,061.50/27,082.50 = 8,195.40/x
  3. Step 3: Cross multiply
    18,061.50x = 27,082.50 × 8,195.40
  4. Step 4: Simplify right side
    18,061.50x = 221,951,920.50
  5. Step 5: Solve for x
    x = 221,951,920.50/18,061.50
  6. Step 6: Final answer
    x = 12,288.68

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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.