Home / 20,481.10-30,705.45-11,247.10

Finding the Fourth Proportional to 20,481.10, 30,705.45 and 11,247.10

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Solution

The fourth proportional to 20,481.10, 30,705.45 and 11,247.10 is: 16,861.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,481.10 : 30,705.45 = 11,247.10 : x
  2. Step 2: Convert to fraction form
    20,481.10/30,705.45 = 11,247.10/x
  3. Step 3: Cross multiply
    20,481.10x = 30,705.45 × 11,247.10
  4. Step 4: Simplify right side
    20,481.10x = 345,347,266.70
  5. Step 5: Solve for x
    x = 345,347,266.70/20,481.10
  6. Step 6: Final answer
    x = 16,861.75

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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.