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Finding the Fourth Proportional to 28,879.80, 43,319.92 and 10,159.96

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Solution

The fourth proportional to 28,879.80, 43,319.92 and 10,159.96 is: 15,240.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,879.80 : 43,319.92 = 10,159.96 : x
  2. Step 2: Convert to fraction form
    28,879.80/43,319.92 = 10,159.96/x
  3. Step 3: Cross multiply
    28,879.80x = 43,319.92 × 10,159.96
  4. Step 4: Simplify right side
    28,879.80x = 440,128,654.40
  5. Step 5: Solve for x
    x = 440,128,654.40/28,879.80
  6. Step 6: Final answer
    x = 15,240.02

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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.