Home / 20,260.20-27,963.78-13,174.32

Finding the Fourth Proportional to 20,260.20, 27,963.78 and 13,174.32

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Solution

The fourth proportional to 20,260.20, 27,963.78 and 13,174.32 is: 18,183.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,260.20 : 27,963.78 = 13,174.32 : x
  2. Step 2: Convert to fraction form
    20,260.20/27,963.78 = 13,174.32/x
  3. Step 3: Cross multiply
    20,260.20x = 27,963.78 × 13,174.32
  4. Step 4: Simplify right side
    20,260.20x = 368,403,786.13
  5. Step 5: Solve for x
    x = 368,403,786.13/20,260.20
  6. Step 6: Final answer
    x = 18,183.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.