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Finding the Fourth Proportional to 13,644.44, 18,828.01 and 8,344.61

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Solution

The fourth proportional to 13,644.44, 18,828.01 and 8,344.61 is: 11,514.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,644.44 : 18,828.01 = 8,344.61 : x
  2. Step 2: Convert to fraction form
    13,644.44/18,828.01 = 8,344.61/x
  3. Step 3: Cross multiply
    13,644.44x = 18,828.01 × 8,344.61
  4. Step 4: Simplify right side
    13,644.44x = 157,112,400.53
  5. Step 5: Solve for x
    x = 157,112,400.53/13,644.44
  6. Step 6: Final answer
    x = 11,514.76

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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.