Home / 13,763.80-20,645.78-3,375.56

Finding the Fourth Proportional to 13,763.80, 20,645.78 and 3,375.56

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Solution

The fourth proportional to 13,763.80, 20,645.78 and 3,375.56 is: 5,063.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,763.80 : 20,645.78 = 3,375.56 : x
  2. Step 2: Convert to fraction form
    13,763.80/20,645.78 = 3,375.56/x
  3. Step 3: Cross multiply
    13,763.80x = 20,645.78 × 3,375.56
  4. Step 4: Simplify right side
    13,763.80x = 69,691,069.14
  5. Step 5: Solve for x
    x = 69,691,069.14/13,763.80
  6. Step 6: Final answer
    x = 5,063.36

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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.