Home / 20,976.26-31,469.00-9,131.92

Finding the Fourth Proportional to 20,976.26, 31,469.00 and 9,131.92

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Solution

The fourth proportional to 20,976.26, 31,469.00 and 9,131.92 is: 13,699.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,976.26 : 31,469.00 = 9,131.92 : x
  2. Step 2: Convert to fraction form
    20,976.26/31,469.00 = 9,131.92/x
  3. Step 3: Cross multiply
    20,976.26x = 31,469.00 × 9,131.92
  4. Step 4: Simplify right side
    20,976.26x = 287,372,266.15
  5. Step 5: Solve for x
    x = 287,372,266.15/20,976.26
  6. Step 6: Final answer
    x = 13,699.88

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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.