Home / 13,401.38-20,101.70-3,540.75

Finding the Fourth Proportional to 13,401.38, 20,101.70 and 3,540.75

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Solution

The fourth proportional to 13,401.38, 20,101.70 and 3,540.75 is: 5,311.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,401.38 : 20,101.70 = 3,540.75 : x
  2. Step 2: Convert to fraction form
    13,401.38/20,101.70 = 3,540.75/x
  3. Step 3: Cross multiply
    13,401.38x = 20,101.70 × 3,540.75
  4. Step 4: Simplify right side
    13,401.38x = 71,175,027.75
  5. Step 5: Solve for x
    x = 71,175,027.75/13,401.38
  6. Step 6: Final answer
    x = 5,311.02

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1.5x scale

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.