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Finding the Fourth Proportional to 41,296.90, 61,949.45 and 13,209.91

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Solution

The fourth proportional to 41,296.90, 61,949.45 and 13,209.91 is: 19,816.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,296.90 : 61,949.45 = 13,209.91 : x
  2. Step 2: Convert to fraction form
    41,296.90/61,949.45 = 13,209.91/x
  3. Step 3: Cross multiply
    41,296.90x = 61,949.45 × 13,209.91
  4. Step 4: Simplify right side
    41,296.90x = 818,346,659.05
  5. Step 5: Solve for x
    x = 818,346,659.05/41,296.90
  6. Step 6: Final answer
    x = 19,816.18

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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.