Home / 20,090.25-27,723.78-11,137.92

Finding the Fourth Proportional to 20,090.25, 27,723.78 and 11,137.92

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Solution

The fourth proportional to 20,090.25, 27,723.78 and 11,137.92 is: 15,369.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.25 : 27,723.78 = 11,137.92 : x
  2. Step 2: Convert to fraction form
    20,090.25/27,723.78 = 11,137.92/x
  3. Step 3: Cross multiply
    20,090.25x = 27,723.78 × 11,137.92
  4. Step 4: Simplify right side
    20,090.25x = 308,785,243.74
  5. Step 5: Solve for x
    x = 308,785,243.74/20,090.25
  6. Step 6: Final answer
    x = 15,369.91

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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.