Home / 39,660.29-54,731.19-21,755.33

Finding the Fourth Proportional to 39,660.29, 54,731.19 and 21,755.33

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Solution

The fourth proportional to 39,660.29, 54,731.19 and 21,755.33 is: 30,022.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,660.29 : 54,731.19 = 21,755.33 : x
  2. Step 2: Convert to fraction form
    39,660.29/54,731.19 = 21,755.33/x
  3. Step 3: Cross multiply
    39,660.29x = 54,731.19 × 21,755.33
  4. Step 4: Simplify right side
    39,660.29x = 1,190,694,826.09
  5. Step 5: Solve for x
    x = 1,190,694,826.09/39,660.29
  6. Step 6: Final answer
    x = 30,022.35

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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.