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Finding the Fourth Proportional to 14,247.12, 21,375 and 7,326.48

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Solution

The fourth proportional to 14,247.12, 21,375 and 7,326.48 is: 10,991.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,247.12 : 21,375 = 7,326.48 : x
  2. Step 2: Convert to fraction form
    14,247.12/21,375 = 7,326.48/x
  3. Step 3: Cross multiply
    14,247.12x = 21,375 × 7,326.48
  4. Step 4: Simplify right side
    14,247.12x = 156,603,510
  5. Step 5: Solve for x
    x = 156,603,510/14,247.12
  6. Step 6: Final answer
    x = 10,991.94

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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.