Home / 20,091.94-27,725.77-11,138.92

Finding the Fourth Proportional to 20,091.94, 27,725.77 and 11,138.92

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Solution

The fourth proportional to 20,091.94, 27,725.77 and 11,138.92 is: 15,371.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,091.94 : 27,725.77 = 11,138.92 : x
  2. Step 2: Convert to fraction form
    20,091.94/27,725.77 = 11,138.92/x
  3. Step 3: Cross multiply
    20,091.94x = 27,725.77 × 11,138.92
  4. Step 4: Simplify right side
    20,091.94x = 308,835,133.97
  5. Step 5: Solve for x
    x = 308,835,133.97/20,091.94
  6. Step 6: Final answer
    x = 15,371.10

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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.