Home / 20,137.65-27,789.19-11,185.73

Finding the Fourth Proportional to 20,137.65, 27,789.19 and 11,185.73

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Solution

The fourth proportional to 20,137.65, 27,789.19 and 11,185.73 is: 15,435.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137.65 : 27,789.19 = 11,185.73 : x
  2. Step 2: Convert to fraction form
    20,137.65/27,789.19 = 11,185.73/x
  3. Step 3: Cross multiply
    20,137.65x = 27,789.19 × 11,185.73
  4. Step 4: Simplify right side
    20,137.65x = 310,842,376.26
  5. Step 5: Solve for x
    x = 310,842,376.26/20,137.65
  6. Step 6: Final answer
    x = 15,435.88

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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.