Home / 13,965.57-20,942.88-5,195.70

Finding the Fourth Proportional to 13,965.57, 20,942.88 and 5,195.70

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Solution

The fourth proportional to 13,965.57, 20,942.88 and 5,195.70 is: 7,791.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,965.57 : 20,942.88 = 5,195.70 : x
  2. Step 2: Convert to fraction form
    13,965.57/20,942.88 = 5,195.70/x
  3. Step 3: Cross multiply
    13,965.57x = 20,942.88 × 5,195.70
  4. Step 4: Simplify right side
    13,965.57x = 108,812,921.62
  5. Step 5: Solve for x
    x = 108,812,921.62/13,965.57
  6. Step 6: Final answer
    x = 7,791.51

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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.