Home / 11,163.32-15,408.60-8,940.68

Finding the Fourth Proportional to 11,163.32, 15,408.60 and 8,940.68

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Solution

The fourth proportional to 11,163.32, 15,408.60 and 8,940.68 is: 12,340.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,163.32 : 15,408.60 = 8,940.68 : x
  2. Step 2: Convert to fraction form
    11,163.32/15,408.60 = 8,940.68/x
  3. Step 3: Cross multiply
    11,163.32x = 15,408.60 × 8,940.68
  4. Step 4: Simplify right side
    11,163.32x = 137,763,361.85
  5. Step 5: Solve for x
    x = 137,763,361.85/11,163.32
  6. Step 6: Final answer
    x = 12,340.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.