Home / 20,433.49-28,198.24-11,480.99

Finding the Fourth Proportional to 20,433.49, 28,198.24 and 11,480.99

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Solution

The fourth proportional to 20,433.49, 28,198.24 and 11,480.99 is: 15,843.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,433.49 : 28,198.24 = 11,480.99 : x
  2. Step 2: Convert to fraction form
    20,433.49/28,198.24 = 11,480.99/x
  3. Step 3: Cross multiply
    20,433.49x = 28,198.24 × 11,480.99
  4. Step 4: Simplify right side
    20,433.49x = 323,743,711.46
  5. Step 5: Solve for x
    x = 323,743,711.46/20,433.49
  6. Step 6: Final answer
    x = 15,843.78

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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.