Home / 18,990,288.20-28,451,183.88-11,691,044.48

Finding the Fourth Proportional to 18,990,288.20, 28,451,183.88 and 11,691,044.48

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Solution

The fourth proportional to 18,990,288.20, 28,451,183.88 and 11,691,044.48 is: 17,515,482.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,990,288.20 : 28,451,183.88 = 11,691,044.48 : x
  2. Step 2: Convert to fraction form
    18,990,288.20/28,451,183.88 = 11,691,044.48/x
  3. Step 3: Cross multiply
    18,990,288.20x = 28,451,183.88 × 11,691,044.48
  4. Step 4: Simplify right side
    18,990,288.20x = 332,624,056,249,739
  5. Step 5: Solve for x
    x = 332,624,056,249,739/18,990,288.20
  6. Step 6: Final answer
    x = 17,515,482.27

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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.