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Finding the Fourth Proportional to 18,773.94, 28,154.43 and 8,906.52

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Solution

The fourth proportional to 18,773.94, 28,154.43 and 8,906.52 is: 13,356.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,773.94 : 28,154.43 = 8,906.52 : x
  2. Step 2: Convert to fraction form
    18,773.94/28,154.43 = 8,906.52/x
  3. Step 3: Cross multiply
    18,773.94x = 28,154.43 × 8,906.52
  4. Step 4: Simplify right side
    18,773.94x = 250,757,993.88
  5. Step 5: Solve for x
    x = 250,757,993.88/18,773.94
  6. Step 6: Final answer
    x = 13,356.71

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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.