Home / 12,306.60-18,449.10-7,378.20

Finding the Fourth Proportional to 12,306.60, 18,449.10 and 7,378.20

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Solution

The fourth proportional to 12,306.60, 18,449.10 and 7,378.20 is: 11,060.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,306.60 : 18,449.10 = 7,378.20 : x
  2. Step 2: Convert to fraction form
    12,306.60/18,449.10 = 7,378.20/x
  3. Step 3: Cross multiply
    12,306.60x = 18,449.10 × 7,378.20
  4. Step 4: Simplify right side
    12,306.60x = 136,121,149.62
  5. Step 5: Solve for x
    x = 136,121,149.62/12,306.60
  6. Step 6: Final answer
    x = 11,060.83

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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.