Home / 13,941.10-20,912.80-3,945.86

Finding the Fourth Proportional to 13,941.10, 20,912.80 and 3,945.86

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Solution

The fourth proportional to 13,941.10, 20,912.80 and 3,945.86 is: 5,919.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,941.10 : 20,912.80 = 3,945.86 : x
  2. Step 2: Convert to fraction form
    13,941.10/20,912.80 = 3,945.86/x
  3. Step 3: Cross multiply
    13,941.10x = 20,912.80 × 3,945.86
  4. Step 4: Simplify right side
    13,941.10x = 82,519,023.43
  5. Step 5: Solve for x
    x = 82,519,023.43/13,941.10
  6. Step 6: Final answer
    x = 5,919.12

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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.