Home / 20,240.88-27,932.04-11,289.12

Finding the Fourth Proportional to 20,240.88, 27,932.04 and 11,289.12

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Solution

The fourth proportional to 20,240.88, 27,932.04 and 11,289.12 is: 15,578.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,240.88 : 27,932.04 = 11,289.12 : x
  2. Step 2: Convert to fraction form
    20,240.88/27,932.04 = 11,289.12/x
  3. Step 3: Cross multiply
    20,240.88x = 27,932.04 × 11,289.12
  4. Step 4: Simplify right side
    20,240.88x = 315,328,151.40
  5. Step 5: Solve for x
    x = 315,328,151.40/20,240.88
  6. Step 6: Final answer
    x = 15,578.78

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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.