Home / 13,486.20-20,229.30-8,820.60

Finding the Fourth Proportional to 13,486.20, 20,229.30 and 8,820.60

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Solution

The fourth proportional to 13,486.20, 20,229.30 and 8,820.60 is: 13,230.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,486.20 : 20,229.30 = 8,820.60 : x
  2. Step 2: Convert to fraction form
    13,486.20/20,229.30 = 8,820.60/x
  3. Step 3: Cross multiply
    13,486.20x = 20,229.30 × 8,820.60
  4. Step 4: Simplify right side
    13,486.20x = 178,434,563.58
  5. Step 5: Solve for x
    x = 178,434,563.58/13,486.20
  6. Step 6: Final answer
    x = 13,230.90

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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.