Home / 20,687.43-31,027.42-8,847.87

Finding the Fourth Proportional to 20,687.43, 31,027.42 and 8,847.87

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Solution

The fourth proportional to 20,687.43, 31,027.42 and 8,847.87 is: 13,270.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687.43 : 31,027.42 = 8,847.87 : x
  2. Step 2: Convert to fraction form
    20,687.43/31,027.42 = 8,847.87/x
  3. Step 3: Cross multiply
    20,687.43x = 31,027.42 × 8,847.87
  4. Step 4: Simplify right side
    20,687.43x = 274,526,473.30
  5. Step 5: Solve for x
    x = 274,526,473.30/20,687.43
  6. Step 6: Final answer
    x = 13,270.20

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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.