Home / 13,198.06-18,213.38-7,229.60

Finding the Fourth Proportional to 13,198.06, 18,213.38 and 7,229.60

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Solution

The fourth proportional to 13,198.06, 18,213.38 and 7,229.60 is: 9,976.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,198.06 : 18,213.38 = 7,229.60 : x
  2. Step 2: Convert to fraction form
    13,198.06/18,213.38 = 7,229.60/x
  3. Step 3: Cross multiply
    13,198.06x = 18,213.38 × 7,229.60
  4. Step 4: Simplify right side
    13,198.06x = 131,675,452.05
  5. Step 5: Solve for x
    x = 131,675,452.05/13,198.06
  6. Step 6: Final answer
    x = 9,976.88

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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.