Home / 11,213.20-16,819.80-7,276.60

Finding the Fourth Proportional to 11,213.20, 16,819.80 and 7,276.60

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Solution

The fourth proportional to 11,213.20, 16,819.80 and 7,276.60 is: 10,914.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,213.20 : 16,819.80 = 7,276.60 : x
  2. Step 2: Convert to fraction form
    11,213.20/16,819.80 = 7,276.60/x
  3. Step 3: Cross multiply
    11,213.20x = 16,819.80 × 7,276.60
  4. Step 4: Simplify right side
    11,213.20x = 122,390,956.68
  5. Step 5: Solve for x
    x = 122,390,956.68/11,213.20
  6. Step 6: Final answer
    x = 10,914.90

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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.