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Finding the Fourth Proportional to 12,279.96, 18,397.92 and 7,462.65

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Solution

The fourth proportional to 12,279.96, 18,397.92 and 7,462.65 is: 11,180.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,279.96 : 18,397.92 = 7,462.65 : x
  2. Step 2: Convert to fraction form
    12,279.96/18,397.92 = 7,462.65/x
  3. Step 3: Cross multiply
    12,279.96x = 18,397.92 × 7,462.65
  4. Step 4: Simplify right side
    12,279.96x = 137,297,237.69
  5. Step 5: Solve for x
    x = 137,297,237.69/12,279.96
  6. Step 6: Final answer
    x = 11,180.59

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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.