Home / 28,876.72-43,321.20-9,152.68

Finding the Fourth Proportional to 28,876.72, 43,321.20 and 9,152.68

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Solution

The fourth proportional to 28,876.72, 43,321.20 and 9,152.68 is: 13,730.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,876.72 : 43,321.20 = 9,152.68 : x
  2. Step 2: Convert to fraction form
    28,876.72/43,321.20 = 9,152.68/x
  3. Step 3: Cross multiply
    28,876.72x = 43,321.20 × 9,152.68
  4. Step 4: Simplify right side
    28,876.72x = 396,505,080.82
  5. Step 5: Solve for x
    x = 396,505,080.82/28,876.72
  6. Step 6: Final answer
    x = 13,730.96

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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.