Home / 18,115.40-27,170.19-4,964.72

Finding the Fourth Proportional to 18,115.40, 27,170.19 and 4,964.72

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Solution

The fourth proportional to 18,115.40, 27,170.19 and 4,964.72 is: 7,446.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,115.40 : 27,170.19 = 4,964.72 : x
  2. Step 2: Convert to fraction form
    18,115.40/27,170.19 = 4,964.72/x
  3. Step 3: Cross multiply
    18,115.40x = 27,170.19 × 4,964.72
  4. Step 4: Simplify right side
    18,115.40x = 134,892,249.85
  5. Step 5: Solve for x
    x = 134,892,249.85/18,115.40
  6. Step 6: Final answer
    x = 7,446.28

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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.