Home / 12,279.11-18,403.24-5,250.86

Finding the Fourth Proportional to 12,279.11, 18,403.24 and 5,250.86

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Solution

The fourth proportional to 12,279.11, 18,403.24 and 5,250.86 is: 7,869.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,279.11 : 18,403.24 = 5,250.86 : x
  2. Step 2: Convert to fraction form
    12,279.11/18,403.24 = 5,250.86/x
  3. Step 3: Cross multiply
    12,279.11x = 18,403.24 × 5,250.86
  4. Step 4: Simplify right side
    12,279.11x = 96,632,836.79
  5. Step 5: Solve for x
    x = 96,632,836.79/12,279.11
  6. Step 6: Final answer
    x = 7,869.69

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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.