Home / 13,401.46-20,103.15-3,540.64

Finding the Fourth Proportional to 13,401.46, 20,103.15 and 3,540.64

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Solution

The fourth proportional to 13,401.46, 20,103.15 and 3,540.64 is: 5,311.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,401.46 : 20,103.15 = 3,540.64 : x
  2. Step 2: Convert to fraction form
    13,401.46/20,103.15 = 3,540.64/x
  3. Step 3: Cross multiply
    13,401.46x = 20,103.15 × 3,540.64
  4. Step 4: Simplify right side
    13,401.46x = 71,178,017.02
  5. Step 5: Solve for x
    x = 71,178,017.02/13,401.46
  6. Step 6: Final answer
    x = 5,311.21

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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.