Home / 20,630.43-28,469.97-11,198.99

Finding the Fourth Proportional to 20,630.43, 28,469.97 and 11,198.99

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Solution

The fourth proportional to 20,630.43, 28,469.97 and 11,198.99 is: 15,454.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,630.43 : 28,469.97 = 11,198.99 : x
  2. Step 2: Convert to fraction form
    20,630.43/28,469.97 = 11,198.99/x
  3. Step 3: Cross multiply
    20,630.43x = 28,469.97 × 11,198.99
  4. Step 4: Simplify right side
    20,630.43x = 318,834,766.98
  5. Step 5: Solve for x
    x = 318,834,766.98/20,630.43
  6. Step 6: Final answer
    x = 15,454.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.