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Finding the Fourth Proportional to 22,751.78, 33,955.41 and 21,455.97

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Solution

The fourth proportional to 22,751.78, 33,955.41 and 21,455.97 is: 32,021.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,751.78 : 33,955.41 = 21,455.97 : x
  2. Step 2: Convert to fraction form
    22,751.78/33,955.41 = 21,455.97/x
  3. Step 3: Cross multiply
    22,751.78x = 33,955.41 × 21,455.97
  4. Step 4: Simplify right side
    22,751.78x = 728,546,258.30
  5. Step 5: Solve for x
    x = 728,546,258.30/22,751.78
  6. Step 6: Final answer
    x = 32,021.51

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.