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Finding the Fourth Proportional to 28,520.92, 42,777.42 and 8,800.12

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Solution

The fourth proportional to 28,520.92, 42,777.42 and 8,800.12 is: 13,198.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,520.92 : 42,777.42 = 8,800.12 : x
  2. Step 2: Convert to fraction form
    28,520.92/42,777.42 = 8,800.12/x
  3. Step 3: Cross multiply
    28,520.92x = 42,777.42 × 8,800.12
  4. Step 4: Simplify right side
    28,520.92x = 376,446,429.29
  5. Step 5: Solve for x
    x = 376,446,429.29/28,520.92
  6. Step 6: Final answer
    x = 13,198.96

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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.