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Finding the Fourth Proportional to 28,652.61, 42,972.42 and 10,879.59

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Solution

The fourth proportional to 28,652.61, 42,972.42 and 10,879.59 is: 16,316.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,652.61 : 42,972.42 = 10,879.59 : x
  2. Step 2: Convert to fraction form
    28,652.61/42,972.42 = 10,879.59/x
  3. Step 3: Cross multiply
    28,652.61x = 42,972.42 × 10,879.59
  4. Step 4: Simplify right side
    28,652.61x = 467,522,310.91
  5. Step 5: Solve for x
    x = 467,522,310.91/28,652.61
  6. Step 6: Final answer
    x = 16,316.92

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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.