Home / 18,279.20-25,190.72-13,234.88

Finding the Fourth Proportional to 18,279.20, 25,190.72 and 13,234.88

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Solution

The fourth proportional to 18,279.20, 25,190.72 and 13,234.88 is: 18,239.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,279.20 : 25,190.72 = 13,234.88 : x
  2. Step 2: Convert to fraction form
    18,279.20/25,190.72 = 13,234.88/x
  3. Step 3: Cross multiply
    18,279.20x = 25,190.72 × 13,234.88
  4. Step 4: Simplify right side
    18,279.20x = 333,396,156.31
  5. Step 5: Solve for x
    x = 333,396,156.31/18,279.20
  6. Step 6: Final answer
    x = 18,239.10

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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.