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Finding the Fourth Proportional to 17,942.80, 26,920.32 and 9,170.32

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Solution

The fourth proportional to 17,942.80, 26,920.32 and 9,170.32 is: 13,758.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,942.80 : 26,920.32 = 9,170.32 : x
  2. Step 2: Convert to fraction form
    17,942.80/26,920.32 = 9,170.32/x
  3. Step 3: Cross multiply
    17,942.80x = 26,920.32 × 9,170.32
  4. Step 4: Simplify right side
    17,942.80x = 246,867,948.90
  5. Step 5: Solve for x
    x = 246,867,948.90/17,942.80
  6. Step 6: Final answer
    x = 13,758.61

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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.