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Finding the Fourth Proportional to 17,017.92, 25,523.28 and 8,128.20

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Solution

The fourth proportional to 17,017.92, 25,523.28 and 8,128.20 is: 12,190.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,017.92 : 25,523.28 = 8,128.20 : x
  2. Step 2: Convert to fraction form
    17,017.92/25,523.28 = 8,128.20/x
  3. Step 3: Cross multiply
    17,017.92x = 25,523.28 × 8,128.20
  4. Step 4: Simplify right side
    17,017.92x = 207,458,324.50
  5. Step 5: Solve for x
    x = 207,458,324.50/17,017.92
  6. Step 6: Final answer
    x = 12,190.58

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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.