Home / 18,116.70-27,171.91-4,789.81

Finding the Fourth Proportional to 18,116.70, 27,171.91 and 4,789.81

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Solution

The fourth proportional to 18,116.70, 27,171.91 and 4,789.81 is: 7,183.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,116.70 : 27,171.91 = 4,789.81 : x
  2. Step 2: Convert to fraction form
    18,116.70/27,171.91 = 4,789.81/x
  3. Step 3: Cross multiply
    18,116.70x = 27,171.91 × 4,789.81
  4. Step 4: Simplify right side
    18,116.70x = 130,148,286.24
  5. Step 5: Solve for x
    x = 130,148,286.24/18,116.70
  6. Step 6: Final answer
    x = 7,183.88

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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.