Home / 12,091.38-18,133.41-4,299.78

Finding the Fourth Proportional to 12,091.38, 18,133.41 and 4,299.78

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Solution

The fourth proportional to 12,091.38, 18,133.41 and 4,299.78 is: 6,448.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,091.38 : 18,133.41 = 4,299.78 : x
  2. Step 2: Convert to fraction form
    12,091.38/18,133.41 = 4,299.78/x
  3. Step 3: Cross multiply
    12,091.38x = 18,133.41 × 4,299.78
  4. Step 4: Simplify right side
    12,091.38x = 77,969,673.65
  5. Step 5: Solve for x
    x = 77,969,673.65/12,091.38
  6. Step 6: Final answer
    x = 6,448.37

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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.