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Finding the Fourth Proportional to 15,195.44, 20,976.12 and 9,229.04

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Solution

The fourth proportional to 15,195.44, 20,976.12 and 9,229.04 is: 12,739.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,195.44 : 20,976.12 = 9,229.04 : x
  2. Step 2: Convert to fraction form
    15,195.44/20,976.12 = 9,229.04/x
  3. Step 3: Cross multiply
    15,195.44x = 20,976.12 × 9,229.04
  4. Step 4: Simplify right side
    15,195.44x = 193,589,450.52
  5. Step 5: Solve for x
    x = 193,589,450.52/15,195.44
  6. Step 6: Final answer
    x = 12,739.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.