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Finding the Fourth Proportional to 28,245.72, 42,372.11 and 8,524.24

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Solution

The fourth proportional to 28,245.72, 42,372.11 and 8,524.24 is: 12,787.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,245.72 : 42,372.11 = 8,524.24 : x
  2. Step 2: Convert to fraction form
    28,245.72/42,372.11 = 8,524.24/x
  3. Step 3: Cross multiply
    28,245.72x = 42,372.11 × 8,524.24
  4. Step 4: Simplify right side
    28,245.72x = 361,190,034.95
  5. Step 5: Solve for x
    x = 361,190,034.95/28,245.72
  6. Step 6: Final answer
    x = 12,787.43

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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.