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Finding the Fourth Proportional to 11,756.39, 17,634.59 and 3,965.20

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Solution

The fourth proportional to 11,756.39, 17,634.59 and 3,965.20 is: 5,947.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,756.39 : 17,634.59 = 3,965.20 : x
  2. Step 2: Convert to fraction form
    11,756.39/17,634.59 = 3,965.20/x
  3. Step 3: Cross multiply
    11,756.39x = 17,634.59 × 3,965.20
  4. Step 4: Simplify right side
    11,756.39x = 69,924,715.27
  5. Step 5: Solve for x
    x = 69,924,715.27/11,756.39
  6. Step 6: Final answer
    x = 5,947.80

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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.