Home / 20,145.97-27,792.49-13,425.04

Finding the Fourth Proportional to 20,145.97, 27,792.49 and 13,425.04

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Solution

The fourth proportional to 20,145.97, 27,792.49 and 13,425.04 is: 18,520.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.97 : 27,792.49 = 13,425.04 : x
  2. Step 2: Convert to fraction form
    20,145.97/27,792.49 = 13,425.04/x
  3. Step 3: Cross multiply
    20,145.97x = 27,792.49 × 13,425.04
  4. Step 4: Simplify right side
    20,145.97x = 373,115,289.95
  5. Step 5: Solve for x
    x = 373,115,289.95/20,145.97
  6. Step 6: Final answer
    x = 18,520.59

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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.