Home / 13,489.25-20,236.21-4,129.04

Finding the Fourth Proportional to 13,489.25, 20,236.21 and 4,129.04

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Solution

The fourth proportional to 13,489.25, 20,236.21 and 4,129.04 is: 6,194.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,489.25 : 20,236.21 = 4,129.04 : x
  2. Step 2: Convert to fraction form
    13,489.25/20,236.21 = 4,129.04/x
  3. Step 3: Cross multiply
    13,489.25x = 20,236.21 × 4,129.04
  4. Step 4: Simplify right side
    13,489.25x = 83,556,160.81
  5. Step 5: Solve for x
    x = 83,556,160.81/13,489.25
  6. Step 6: Final answer
    x = 6,194.28

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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.