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Finding the Fourth Proportional to 18,121.59, 27,176.90 and 10,724.09

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Solution

The fourth proportional to 18,121.59, 27,176.90 and 10,724.09 is: 16,082.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.59 : 27,176.90 = 10,724.09 : x
  2. Step 2: Convert to fraction form
    18,121.59/27,176.90 = 10,724.09/x
  3. Step 3: Cross multiply
    18,121.59x = 27,176.90 × 10,724.09
  4. Step 4: Simplify right side
    18,121.59x = 291,447,332.02
  5. Step 5: Solve for x
    x = 291,447,332.02/18,121.59
  6. Step 6: Final answer
    x = 16,082.88

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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.