Home / 13,424.96-20,140.32-5,629.28

Finding the Fourth Proportional to 13,424.96, 20,140.32 and 5,629.28

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Solution

The fourth proportional to 13,424.96, 20,140.32 and 5,629.28 is: 8,445.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,424.96 : 20,140.32 = 5,629.28 : x
  2. Step 2: Convert to fraction form
    13,424.96/20,140.32 = 5,629.28/x
  3. Step 3: Cross multiply
    13,424.96x = 20,140.32 × 5,629.28
  4. Step 4: Simplify right side
    13,424.96x = 113,375,500.57
  5. Step 5: Solve for x
    x = 113,375,500.57/13,424.96
  6. Step 6: Final answer
    x = 8,445.13

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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.