Home / 20,117.82-27,761.29-11,165.33

Finding the Fourth Proportional to 20,117.82, 27,761.29 and 11,165.33

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Solution

The fourth proportional to 20,117.82, 27,761.29 and 11,165.33 is: 15,407.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,117.82 : 27,761.29 = 11,165.33 : x
  2. Step 2: Convert to fraction form
    20,117.82/27,761.29 = 11,165.33/x
  3. Step 3: Cross multiply
    20,117.82x = 27,761.29 × 11,165.33
  4. Step 4: Simplify right side
    20,117.82x = 309,963,839.23
  5. Step 5: Solve for x
    x = 309,963,839.23/20,117.82
  6. Step 6: Final answer
    x = 15,407.43

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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.