Home / 18,660.38-27,990.56-5,521.97

Finding the Fourth Proportional to 18,660.38, 27,990.56 and 5,521.97

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Solution

The fourth proportional to 18,660.38, 27,990.56 and 5,521.97 is: 8,282.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,660.38 : 27,990.56 = 5,521.97 : x
  2. Step 2: Convert to fraction form
    18,660.38/27,990.56 = 5,521.97/x
  3. Step 3: Cross multiply
    18,660.38x = 27,990.56 × 5,521.97
  4. Step 4: Simplify right side
    18,660.38x = 154,563,116.38
  5. Step 5: Solve for x
    x = 154,563,116.38/18,660.38
  6. Step 6: Final answer
    x = 8,282.96

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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.