Home / 13,680.60-20,512.67-5,350.68

Finding the Fourth Proportional to 13,680.60, 20,512.67 and 5,350.68

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Solution

The fourth proportional to 13,680.60, 20,512.67 and 5,350.68 is: 8,022.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,680.60 : 20,512.67 = 5,350.68 : x
  2. Step 2: Convert to fraction form
    13,680.60/20,512.67 = 5,350.68/x
  3. Step 3: Cross multiply
    13,680.60x = 20,512.67 × 5,350.68
  4. Step 4: Simplify right side
    13,680.60x = 109,756,779.10
  5. Step 5: Solve for x
    x = 109,756,779.10/13,680.60
  6. Step 6: Final answer
    x = 8,022.81

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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.