Home / 18,981,081.55-28,517,043.78-12,170,997.23

Finding the Fourth Proportional to 18,981,081.55, 28,517,043.78 and 12,170,997.23

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Solution

The fourth proportional to 18,981,081.55, 28,517,043.78 and 12,170,997.23 is: 18,285,620.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,981,081.55 : 28,517,043.78 = 12,170,997.23 : x
  2. Step 2: Convert to fraction form
    18,981,081.55/28,517,043.78 = 12,170,997.23/x
  3. Step 3: Cross multiply
    18,981,081.55x = 28,517,043.78 × 12,170,997.23
  4. Step 4: Simplify right side
    18,981,081.55x = 347,080,860,793,313.75
  5. Step 5: Solve for x
    x = 347,080,860,793,313.75/18,981,081.55
  6. Step 6: Final answer
    x = 18,285,620.87

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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.