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Finding the Fourth Proportional to 17,171.20, 25,756.80 and 8,401.60

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Solution

The fourth proportional to 17,171.20, 25,756.80 and 8,401.60 is: 12,602.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,171.20 : 25,756.80 = 8,401.60 : x
  2. Step 2: Convert to fraction form
    17,171.20/25,756.80 = 8,401.60/x
  3. Step 3: Cross multiply
    17,171.20x = 25,756.80 × 8,401.60
  4. Step 4: Simplify right side
    17,171.20x = 216,398,330.88
  5. Step 5: Solve for x
    x = 216,398,330.88/17,171.20
  6. Step 6: Final answer
    x = 12,602.40

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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.