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Finding the Fourth Proportional to 17,182.20, 25,775.70 and 7,321.40

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Solution

The fourth proportional to 17,182.20, 25,775.70 and 7,321.40 is: 10,983.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,182.20 : 25,775.70 = 7,321.40 : x
  2. Step 2: Convert to fraction form
    17,182.20/25,775.70 = 7,321.40/x
  3. Step 3: Cross multiply
    17,182.20x = 25,775.70 × 7,321.40
  4. Step 4: Simplify right side
    17,182.20x = 188,714,209.98
  5. Step 5: Solve for x
    x = 188,714,209.98/17,182.20
  6. Step 6: Final answer
    x = 10,983.12

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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.