Home / 18,922.20-28,383.30-17,107.80

Finding the Fourth Proportional to 18,922.20, 28,383.30 and 17,107.80

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Solution

The fourth proportional to 18,922.20, 28,383.30 and 17,107.80 is: 25,661.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,922.20 : 28,383.30 = 17,107.80 : x
  2. Step 2: Convert to fraction form
    18,922.20/28,383.30 = 17,107.80/x
  3. Step 3: Cross multiply
    18,922.20x = 28,383.30 × 17,107.80
  4. Step 4: Simplify right side
    18,922.20x = 485,575,819.74
  5. Step 5: Solve for x
    x = 485,575,819.74/18,922.20
  6. Step 6: Final answer
    x = 25,661.70

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1.5x scale

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.