Home / 18,873,218.21-28,309,542.86-8,491,105.35

Finding the Fourth Proportional to 18,873,218.21, 28,309,542.86 and 8,491,105.35

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Solution

The fourth proportional to 18,873,218.21, 28,309,542.86 and 8,491,105.35 is: 12,736,530.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,873,218.21 : 28,309,542.86 = 8,491,105.35 : x
  2. Step 2: Convert to fraction form
    18,873,218.21/28,309,542.86 = 8,491,105.35/x
  3. Step 3: Cross multiply
    18,873,218.21x = 28,309,542.86 × 8,491,105.35
  4. Step 4: Simplify right side
    18,873,218.21x = 240,379,310,792,144.78
  5. Step 5: Solve for x
    x = 240,379,310,792,144.78/18,873,218.21
  6. Step 6: Final answer
    x = 12,736,530.05

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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.