Home / 27,435.20-41,120.00-12,629.21

Finding the Fourth Proportional to 27,435.20, 41,120.00 and 12,629.21

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Solution

The fourth proportional to 27,435.20, 41,120.00 and 12,629.21 is: 18,928.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,435.20 : 41,120.00 = 12,629.21 : x
  2. Step 2: Convert to fraction form
    27,435.20/41,120.00 = 12,629.21/x
  3. Step 3: Cross multiply
    27,435.20x = 41,120.00 × 12,629.21
  4. Step 4: Simplify right side
    27,435.20x = 519,313,052.05
  5. Step 5: Solve for x
    x = 519,313,052.05/27,435.20
  6. Step 6: Final answer
    x = 18,928.71

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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.