Home / 12,640.14-18,952.11-5,249.70

Finding the Fourth Proportional to 12,640.14, 18,952.11 and 5,249.70

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Solution

The fourth proportional to 12,640.14, 18,952.11 and 5,249.70 is: 7,871.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,640.14 : 18,952.11 = 5,249.70 : x
  2. Step 2: Convert to fraction form
    12,640.14/18,952.11 = 5,249.70/x
  3. Step 3: Cross multiply
    12,640.14x = 18,952.11 × 5,249.70
  4. Step 4: Simplify right side
    12,640.14x = 99,492,891.87
  5. Step 5: Solve for x
    x = 99,492,891.87/12,640.14
  6. Step 6: Final answer
    x = 7,871.19

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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.