Home / 13,401.72-20,104.56-12,581.64

Finding the Fourth Proportional to 13,401.72, 20,104.56 and 12,581.64

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Solution

The fourth proportional to 13,401.72, 20,104.56 and 12,581.64 is: 18,874.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,401.72 : 20,104.56 = 12,581.64 : x
  2. Step 2: Convert to fraction form
    13,401.72/20,104.56 = 12,581.64/x
  3. Step 3: Cross multiply
    13,401.72x = 20,104.56 × 12,581.64
  4. Step 4: Simplify right side
    13,401.72x = 252,948,336.28
  5. Step 5: Solve for x
    x = 252,948,336.28/13,401.72
  6. Step 6: Final answer
    x = 18,874.32

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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.