Home / 13,921.86-20,884.11-5,039.43

Finding the Fourth Proportional to 13,921.86, 20,884.11 and 5,039.43

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Solution

The fourth proportional to 13,921.86, 20,884.11 and 5,039.43 is: 7,559.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.86 : 20,884.11 = 5,039.43 : x
  2. Step 2: Convert to fraction form
    13,921.86/20,884.11 = 5,039.43/x
  3. Step 3: Cross multiply
    13,921.86x = 20,884.11 × 5,039.43
  4. Step 4: Simplify right side
    13,921.86x = 105,244,010.46
  5. Step 5: Solve for x
    x = 105,244,010.46/13,921.86
  6. Step 6: Final answer
    x = 7,559.62

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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.