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Finding the Fourth Proportional to 22,397,890.80, 33,512,855.40 and 20,382,351.60

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Solution

The fourth proportional to 22,397,890.80, 33,512,855.40 and 20,382,351.60 is: 30,497,103.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,397,890.80 : 33,512,855.40 = 20,382,351.60 : x
  2. Step 2: Convert to fraction form
    22,397,890.80/33,512,855.40 = 20,382,351.60/x
  3. Step 3: Cross multiply
    22,397,890.80x = 33,512,855.40 × 20,382,351.60
  4. Step 4: Simplify right side
    22,397,890.80x = 683,070,801,882,758.62
  5. Step 5: Solve for x
    x = 683,070,801,882,758.62/22,397,890.80
  6. Step 6: Final answer
    x = 30,497,103.86

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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.