Home / 20,137.44-27,789.30-11,185.05

Finding the Fourth Proportional to 20,137.44, 27,789.30 and 11,185.05

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Solution

The fourth proportional to 20,137.44, 27,789.30 and 11,185.05 is: 15,435.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137.44 : 27,789.30 = 11,185.05 : x
  2. Step 2: Convert to fraction form
    20,137.44/27,789.30 = 11,185.05/x
  3. Step 3: Cross multiply
    20,137.44x = 27,789.30 × 11,185.05
  4. Step 4: Simplify right side
    20,137.44x = 310,824,709.97
  5. Step 5: Solve for x
    x = 310,824,709.97/20,137.44
  6. Step 6: Final answer
    x = 15,435.17

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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.