Home / 12,279.74-18,419.47-7,350.76

Finding the Fourth Proportional to 12,279.74, 18,419.47 and 7,350.76

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Solution

The fourth proportional to 12,279.74, 18,419.47 and 7,350.76 is: 11,026.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,279.74 : 18,419.47 = 7,350.76 : x
  2. Step 2: Convert to fraction form
    12,279.74/18,419.47 = 7,350.76/x
  3. Step 3: Cross multiply
    12,279.74x = 18,419.47 × 7,350.76
  4. Step 4: Simplify right side
    12,279.74x = 135,397,103.30
  5. Step 5: Solve for x
    x = 135,397,103.30/12,279.74
  6. Step 6: Final answer
    x = 11,026.06

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Similar ratio
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1.5x scale

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.