Home / 11,815.62-17,734.20-7,440.90

Finding the Fourth Proportional to 11,815.62, 17,734.20 and 7,440.90

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Solution

The fourth proportional to 11,815.62, 17,734.20 and 7,440.90 is: 11,168.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,815.62 : 17,734.20 = 7,440.90 : x
  2. Step 2: Convert to fraction form
    11,815.62/17,734.20 = 7,440.90/x
  3. Step 3: Cross multiply
    11,815.62x = 17,734.20 × 7,440.90
  4. Step 4: Simplify right side
    11,815.62x = 131,958,408.78
  5. Step 5: Solve for x
    x = 131,958,408.78/11,815.62
  6. Step 6: Final answer
    x = 11,168.13

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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.