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Finding the Fourth Proportional to 11,161.92, 16,742.91 and 8,353.71

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Solution

The fourth proportional to 11,161.92, 16,742.91 and 8,353.71 is: 12,530.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,161.92 : 16,742.91 = 8,353.71 : x
  2. Step 2: Convert to fraction form
    11,161.92/16,742.91 = 8,353.71/x
  3. Step 3: Cross multiply
    11,161.92x = 16,742.91 × 8,353.71
  4. Step 4: Simplify right side
    11,161.92x = 139,865,414.70
  5. Step 5: Solve for x
    x = 139,865,414.70/11,161.92
  6. Step 6: Final answer
    x = 12,530.59

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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.