Home / 13,401.20-20,103.60-4,638.80

Finding the Fourth Proportional to 13,401.20, 20,103.60 and 4,638.80

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Solution

The fourth proportional to 13,401.20, 20,103.60 and 4,638.80 is: 6,958.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,401.20 : 20,103.60 = 4,638.80 : x
  2. Step 2: Convert to fraction form
    13,401.20/20,103.60 = 4,638.80/x
  3. Step 3: Cross multiply
    13,401.20x = 20,103.60 × 4,638.80
  4. Step 4: Simplify right side
    13,401.20x = 93,256,579.68
  5. Step 5: Solve for x
    x = 93,256,579.68/13,401.20
  6. Step 6: Final answer
    x = 6,958.82

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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.