Home / 39,694.61-54,779.19-21,791.25

Finding the Fourth Proportional to 39,694.61, 54,779.19 and 21,791.25

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Solution

The fourth proportional to 39,694.61, 54,779.19 and 21,791.25 is: 30,072.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,694.61 : 54,779.19 = 21,791.25 : x
  2. Step 2: Convert to fraction form
    39,694.61/54,779.19 = 21,791.25/x
  3. Step 3: Cross multiply
    39,694.61x = 54,779.19 × 21,791.25
  4. Step 4: Simplify right side
    39,694.61x = 1,193,706,942.37
  5. Step 5: Solve for x
    x = 1,193,706,942.37/39,694.61
  6. Step 6: Final answer
    x = 30,072.27

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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.