Home / 13,822.68-20,730.96-3,959.76

Finding the Fourth Proportional to 13,822.68, 20,730.96 and 3,959.76

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Solution

The fourth proportional to 13,822.68, 20,730.96 and 3,959.76 is: 5,938.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,822.68 : 20,730.96 = 3,959.76 : x
  2. Step 2: Convert to fraction form
    13,822.68/20,730.96 = 3,959.76/x
  3. Step 3: Cross multiply
    13,822.68x = 20,730.96 × 3,959.76
  4. Step 4: Simplify right side
    13,822.68x = 82,089,626.17
  5. Step 5: Solve for x
    x = 82,089,626.17/13,822.68
  6. Step 6: Final answer
    x = 5,938.76

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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.