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Finding the Fourth Proportional to 13,696.88, 20,545.31 and 4,462.88

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Solution

The fourth proportional to 13,696.88, 20,545.31 and 4,462.88 is: 6,694.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,696.88 : 20,545.31 = 4,462.88 : x
  2. Step 2: Convert to fraction form
    13,696.88/20,545.31 = 4,462.88/x
  3. Step 3: Cross multiply
    13,696.88x = 20,545.31 × 4,462.88
  4. Step 4: Simplify right side
    13,696.88x = 91,691,161.52
  5. Step 5: Solve for x
    x = 91,691,161.52/13,696.88
  6. Step 6: Final answer
    x = 6,694.31

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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.