Home / 11,168.20-15,408.66-6,450.76

Finding the Fourth Proportional to 11,168.20, 15,408.66 and 6,450.76

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Solution

The fourth proportional to 11,168.20, 15,408.66 and 6,450.76 is: 8,900.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,168.20 : 15,408.66 = 6,450.76 : x
  2. Step 2: Convert to fraction form
    11,168.20/15,408.66 = 6,450.76/x
  3. Step 3: Cross multiply
    11,168.20x = 15,408.66 × 6,450.76
  4. Step 4: Simplify right side
    11,168.20x = 99,397,567.58
  5. Step 5: Solve for x
    x = 99,397,567.58/11,168.20
  6. Step 6: Final answer
    x = 8,900.05

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Half scale
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Double scale
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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.