Home / 11,144.08-15,375.72-8,778.88

Finding the Fourth Proportional to 11,144.08, 15,375.72 and 8,778.88

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Solution

The fourth proportional to 11,144.08, 15,375.72 and 8,778.88 is: 12,112.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,144.08 : 15,375.72 = 8,778.88 : x
  2. Step 2: Convert to fraction form
    11,144.08/15,375.72 = 8,778.88/x
  3. Step 3: Cross multiply
    11,144.08x = 15,375.72 × 8,778.88
  4. Step 4: Simplify right side
    11,144.08x = 134,981,600.79
  5. Step 5: Solve for x
    x = 134,981,600.79/11,144.08
  6. Step 6: Final answer
    x = 12,112.40

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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.