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Finding the Fourth Proportional to 17,170.20, 25,758.20 and 5,321.25

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Solution

The fourth proportional to 17,170.20, 25,758.20 and 5,321.25 is: 7,982.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,170.20 : 25,758.20 = 5,321.25 : x
  2. Step 2: Convert to fraction form
    17,170.20/25,758.20 = 5,321.25/x
  3. Step 3: Cross multiply
    17,170.20x = 25,758.20 × 5,321.25
  4. Step 4: Simplify right side
    17,170.20x = 137,065,821.75
  5. Step 5: Solve for x
    x = 137,065,821.75/17,170.20
  6. Step 6: Final answer
    x = 7,982.77

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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.