Home / 12,115.70-18,171.44-3,231.14

Finding the Fourth Proportional to 12,115.70, 18,171.44 and 3,231.14

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Solution

The fourth proportional to 12,115.70, 18,171.44 and 3,231.14 is: 4,846.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115.70 : 18,171.44 = 3,231.14 : x
  2. Step 2: Convert to fraction form
    12,115.70/18,171.44 = 3,231.14/x
  3. Step 3: Cross multiply
    12,115.70x = 18,171.44 × 3,231.14
  4. Step 4: Simplify right side
    12,115.70x = 58,714,450.49
  5. Step 5: Solve for x
    x = 58,714,450.49/12,115.70
  6. Step 6: Final answer
    x = 4,846.15

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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.