Home / 18,456.20-27,650.87-8,469.31

Finding the Fourth Proportional to 18,456.20, 27,650.87 and 8,469.31

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Solution

The fourth proportional to 18,456.20, 27,650.87 and 8,469.31 is: 12,688.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,456.20 : 27,650.87 = 8,469.31 : x
  2. Step 2: Convert to fraction form
    18,456.20/27,650.87 = 8,469.31/x
  3. Step 3: Cross multiply
    18,456.20x = 27,650.87 × 8,469.31
  4. Step 4: Simplify right side
    18,456.20x = 234,183,761.93
  5. Step 5: Solve for x
    x = 234,183,761.93/18,456.20
  6. Step 6: Final answer
    x = 12,688.62

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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.