Home / 20,286.20-30,429.30-17,175.80

Finding the Fourth Proportional to 20,286.20, 30,429.30 and 17,175.80

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Solution

The fourth proportional to 20,286.20, 30,429.30 and 17,175.80 is: 25,763.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,286.20 : 30,429.30 = 17,175.80 : x
  2. Step 2: Convert to fraction form
    20,286.20/30,429.30 = 17,175.80/x
  3. Step 3: Cross multiply
    20,286.20x = 30,429.30 × 17,175.80
  4. Step 4: Simplify right side
    20,286.20x = 522,647,570.94
  5. Step 5: Solve for x
    x = 522,647,570.94/20,286.20
  6. Step 6: Final answer
    x = 25,763.70

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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.