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Finding the Fourth Proportional to 18,773.79, 28,163.14 and 6,935.86

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Solution

The fourth proportional to 18,773.79, 28,163.14 and 6,935.86 is: 10,404.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,773.79 : 28,163.14 = 6,935.86 : x
  2. Step 2: Convert to fraction form
    18,773.79/28,163.14 = 6,935.86/x
  3. Step 3: Cross multiply
    18,773.79x = 28,163.14 × 6,935.86
  4. Step 4: Simplify right side
    18,773.79x = 195,335,438.05
  5. Step 5: Solve for x
    x = 195,335,438.05/18,773.79
  6. Step 6: Final answer
    x = 10,404.69

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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.