Home / 20,391,811.20-30,587,716.80-11,321,884.80

Finding the Fourth Proportional to 20,391,811.20, 30,587,716.80 and 11,321,884.80

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Solution

The fourth proportional to 20,391,811.20, 30,587,716.80 and 11,321,884.80 is: 16,982,827.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,391,811.20 : 30,587,716.80 = 11,321,884.80 : x
  2. Step 2: Convert to fraction form
    20,391,811.20/30,587,716.80 = 11,321,884.80/x
  3. Step 3: Cross multiply
    20,391,811.20x = 30,587,716.80 × 11,321,884.80
  4. Step 4: Simplify right side
    20,391,811.20x = 346,310,605,904,624.69
  5. Step 5: Solve for x
    x = 346,310,605,904,624.69/20,391,811.20
  6. Step 6: Final answer
    x = 16,982,827.20

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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.