Home / 12,140,904.70-18,211,357.05-11,217,115.90

Finding the Fourth Proportional to 12,140,904.70, 18,211,357.05 and 11,217,115.90

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Solution

The fourth proportional to 12,140,904.70, 18,211,357.05 and 11,217,115.90 is: 16,825,673.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,140,904.70 : 18,211,357.05 = 11,217,115.90 : x
  2. Step 2: Convert to fraction form
    12,140,904.70/18,211,357.05 = 11,217,115.90/x
  3. Step 3: Cross multiply
    12,140,904.70x = 18,211,357.05 × 11,217,115.90
  4. Step 4: Simplify right side
    12,140,904.70x = 204,278,902,726,132.12
  5. Step 5: Solve for x
    x = 204,278,902,726,132.12/12,140,904.70
  6. Step 6: Final answer
    x = 16,825,673.85

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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.