Home / 13,901.76-20,851.56-5,581.44

Finding the Fourth Proportional to 13,901.76, 20,851.56 and 5,581.44

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Solution

The fourth proportional to 13,901.76, 20,851.56 and 5,581.44 is: 8,371.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,901.76 : 20,851.56 = 5,581.44 : x
  2. Step 2: Convert to fraction form
    13,901.76/20,851.56 = 5,581.44/x
  3. Step 3: Cross multiply
    13,901.76x = 20,851.56 × 5,581.44
  4. Step 4: Simplify right side
    13,901.76x = 116,381,731.05
  5. Step 5: Solve for x
    x = 116,381,731.05/13,901.76
  6. Step 6: Final answer
    x = 8,371.73

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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.