Home / 18,668.20-27,995.78-5,517.08

Finding the Fourth Proportional to 18,668.20, 27,995.78 and 5,517.08

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Solution

The fourth proportional to 18,668.20, 27,995.78 and 5,517.08 is: 8,273.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,668.20 : 27,995.78 = 5,517.08 : x
  2. Step 2: Convert to fraction form
    18,668.20/27,995.78 = 5,517.08/x
  3. Step 3: Cross multiply
    18,668.20x = 27,995.78 × 5,517.08
  4. Step 4: Simplify right side
    18,668.20x = 154,454,957.92
  5. Step 5: Solve for x
    x = 154,454,957.92/18,668.20
  6. Step 6: Final answer
    x = 8,273.69

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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.