Home / 20,001,942.70-30,002,914.05-19,218,121.90

Finding the Fourth Proportional to 20,001,942.70, 30,002,914.05 and 19,218,121.90

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Solution

The fourth proportional to 20,001,942.70, 30,002,914.05 and 19,218,121.90 is: 28,827,182.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,001,942.70 : 30,002,914.05 = 19,218,121.90 : x
  2. Step 2: Convert to fraction form
    20,001,942.70/30,002,914.05 = 19,218,121.90/x
  3. Step 3: Cross multiply
    20,001,942.70x = 30,002,914.05 × 19,218,121.90
  4. Step 4: Simplify right side
    20,001,942.70x = 576,599,659,568,122.62
  5. Step 5: Solve for x
    x = 576,599,659,568,122.62/20,001,942.70
  6. Step 6: Final answer
    x = 28,827,182.85

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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.