Home / 13,696.80-20,545.17-3,308.55

Finding the Fourth Proportional to 13,696.80, 20,545.17 and 3,308.55

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Solution

The fourth proportional to 13,696.80, 20,545.17 and 3,308.55 is: 4,962.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,696.80 : 20,545.17 = 3,308.55 : x
  2. Step 2: Convert to fraction form
    13,696.80/20,545.17 = 3,308.55/x
  3. Step 3: Cross multiply
    13,696.80x = 20,545.17 × 3,308.55
  4. Step 4: Simplify right side
    13,696.80x = 67,974,722.20
  5. Step 5: Solve for x
    x = 67,974,722.20/13,696.80
  6. Step 6: Final answer
    x = 4,962.82

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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.