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Finding the Fourth Proportional to 28,473.92, 42,709.82 and 8,751.96

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Solution

The fourth proportional to 28,473.92, 42,709.82 and 8,751.96 is: 13,127.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,473.92 : 42,709.82 = 8,751.96 : x
  2. Step 2: Convert to fraction form
    28,473.92/42,709.82 = 8,751.96/x
  3. Step 3: Cross multiply
    28,473.92x = 42,709.82 × 8,751.96
  4. Step 4: Simplify right side
    28,473.92x = 373,794,592.49
  5. Step 5: Solve for x
    x = 373,794,592.49/28,473.92
  6. Step 6: Final answer
    x = 13,127.61

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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.