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Finding the Fourth Proportional to 11,351.80, 17,027.70 and 8,217.10

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Solution

The fourth proportional to 11,351.80, 17,027.70 and 8,217.10 is: 12,325.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,351.80 : 17,027.70 = 8,217.10 : x
  2. Step 2: Convert to fraction form
    11,351.80/17,027.70 = 8,217.10/x
  3. Step 3: Cross multiply
    11,351.80x = 17,027.70 × 8,217.10
  4. Step 4: Simplify right side
    11,351.80x = 139,918,313.67
  5. Step 5: Solve for x
    x = 139,918,313.67/11,351.80
  6. Step 6: Final answer
    x = 12,325.65

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Similar ratio
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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.