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Finding the Fourth Proportional to 18,882.56, 28,306.56 and 7,186.88

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Solution

The fourth proportional to 18,882.56, 28,306.56 and 7,186.88 is: 10,773.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,882.56 : 28,306.56 = 7,186.88 : x
  2. Step 2: Convert to fraction form
    18,882.56/28,306.56 = 7,186.88/x
  3. Step 3: Cross multiply
    18,882.56x = 28,306.56 × 7,186.88
  4. Step 4: Simplify right side
    18,882.56x = 203,435,849.93
  5. Step 5: Solve for x
    x = 203,435,849.93/18,882.56
  6. Step 6: Final answer
    x = 10,773.74

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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.