Home / 18,216.40-27,310.20-7,819.60

Finding the Fourth Proportional to 18,216.40, 27,310.20 and 7,819.60

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Solution

The fourth proportional to 18,216.40, 27,310.20 and 7,819.60 is: 11,723.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,216.40 : 27,310.20 = 7,819.60 : x
  2. Step 2: Convert to fraction form
    18,216.40/27,310.20 = 7,819.60/x
  3. Step 3: Cross multiply
    18,216.40x = 27,310.20 × 7,819.60
  4. Step 4: Simplify right side
    18,216.40x = 213,554,839.92
  5. Step 5: Solve for x
    x = 213,554,839.92/18,216.40
  6. Step 6: Final answer
    x = 11,723.22

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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.