Home / 20,091.24-27,725.44-11,138.66

Finding the Fourth Proportional to 20,091.24, 27,725.44 and 11,138.66

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Solution

The fourth proportional to 20,091.24, 27,725.44 and 11,138.66 is: 15,371.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,091.24 : 27,725.44 = 11,138.66 : x
  2. Step 2: Convert to fraction form
    20,091.24/27,725.44 = 11,138.66/x
  3. Step 3: Cross multiply
    20,091.24x = 27,725.44 × 11,138.66
  4. Step 4: Simplify right side
    20,091.24x = 308,824,363.85
  5. Step 5: Solve for x
    x = 308,824,363.85/20,091.24
  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.