Home / 13,198.23-18,213.21-7,229.70

Finding the Fourth Proportional to 13,198.23, 18,213.21 and 7,229.70

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Solution

The fourth proportional to 13,198.23, 18,213.21 and 7,229.70 is: 9,976.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,198.23 : 18,213.21 = 7,229.70 : x
  2. Step 2: Convert to fraction form
    13,198.23/18,213.21 = 7,229.70/x
  3. Step 3: Cross multiply
    13,198.23x = 18,213.21 × 7,229.70
  4. Step 4: Simplify right side
    13,198.23x = 131,676,044.34
  5. Step 5: Solve for x
    x = 131,676,044.34/13,198.23
  6. Step 6: Final answer
    x = 9,976.80

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Similar ratio
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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.