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Finding the Fourth Proportional to 11,416.20, 17,116.20 and 5,179.20

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Solution

The fourth proportional to 11,416.20, 17,116.20 and 5,179.20 is: 7,765.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,416.20 : 17,116.20 = 5,179.20 : x
  2. Step 2: Convert to fraction form
    11,416.20/17,116.20 = 5,179.20/x
  3. Step 3: Cross multiply
    11,416.20x = 17,116.20 × 5,179.20
  4. Step 4: Simplify right side
    11,416.20x = 88,648,223.04
  5. Step 5: Solve for x
    x = 88,648,223.04/11,416.20
  6. Step 6: Final answer
    x = 7,765.13

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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.