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Finding the Fourth Proportional to 28,493.62, 42,744.60 and 8,773.90

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Solution

The fourth proportional to 28,493.62, 42,744.60 and 8,773.90 is: 13,162.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,493.62 : 42,744.60 = 8,773.90 : x
  2. Step 2: Convert to fraction form
    28,493.62/42,744.60 = 8,773.90/x
  3. Step 3: Cross multiply
    28,493.62x = 42,744.60 × 8,773.90
  4. Step 4: Simplify right side
    28,493.62x = 375,036,845.94
  5. Step 5: Solve for x
    x = 375,036,845.94/28,493.62
  6. Step 6: Final answer
    x = 13,162.13

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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.