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Finding the Fourth Proportional to 13,229.36, 18,255.19 and 7,924.04

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Solution

The fourth proportional to 13,229.36, 18,255.19 and 7,924.04 is: 10,934.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,229.36 : 18,255.19 = 7,924.04 : x
  2. Step 2: Convert to fraction form
    13,229.36/18,255.19 = 7,924.04/x
  3. Step 3: Cross multiply
    13,229.36x = 18,255.19 × 7,924.04
  4. Step 4: Simplify right side
    13,229.36x = 144,654,816.15
  5. Step 5: Solve for x
    x = 144,654,816.15/13,229.36
  6. Step 6: Final answer
    x = 10,934.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.