Home / 13,371.35-18,452.68-7,321.49

Finding the Fourth Proportional to 13,371.35, 18,452.68 and 7,321.49

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Solution

The fourth proportional to 13,371.35, 18,452.68 and 7,321.49 is: 10,103.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,371.35 : 18,452.68 = 7,321.49 : x
  2. Step 2: Convert to fraction form
    13,371.35/18,452.68 = 7,321.49/x
  3. Step 3: Cross multiply
    13,371.35x = 18,452.68 × 7,321.49
  4. Step 4: Simplify right side
    13,371.35x = 135,101,112.09
  5. Step 5: Solve for x
    x = 135,101,112.09/13,371.35
  6. Step 6: Final answer
    x = 10,103.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.