Home / 20,055.82-27,676.94-11,102.78

Finding the Fourth Proportional to 20,055.82, 27,676.94 and 11,102.78

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Solution

The fourth proportional to 20,055.82, 27,676.94 and 11,102.78 is: 15,321.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,055.82 : 27,676.94 = 11,102.78 : x
  2. Step 2: Convert to fraction form
    20,055.82/27,676.94 = 11,102.78/x
  3. Step 3: Cross multiply
    20,055.82x = 27,676.94 × 11,102.78
  4. Step 4: Simplify right side
    20,055.82x = 307,290,975.89
  5. Step 5: Solve for x
    x = 307,290,975.89/20,055.82
  6. Step 6: Final answer
    x = 15,321.79

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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.