Home / 20,204,304.12-30,313,985.34-12,123,079.80

Finding the Fourth Proportional to 20,204,304.12, 30,313,985.34 and 12,123,079.80

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Solution

The fourth proportional to 20,204,304.12, 30,313,985.34 and 12,123,079.80 is: 18,189,137.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,204,304.12 : 30,313,985.34 = 12,123,079.80 : x
  2. Step 2: Convert to fraction form
    20,204,304.12/30,313,985.34 = 12,123,079.80/x
  3. Step 3: Cross multiply
    20,204,304.12x = 30,313,985.34 × 12,123,079.80
  4. Step 4: Simplify right side
    20,204,304.12x = 367,498,863,332,850.12
  5. Step 5: Solve for x
    x = 367,498,863,332,850.12/20,204,304.12
  6. Step 6: Final answer
    x = 18,189,137.38

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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.