Home / 39,696.51-54,780.99-21,791.85

Finding the Fourth Proportional to 39,696.51, 54,780.99 and 21,791.85

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Solution

The fourth proportional to 39,696.51, 54,780.99 and 21,791.85 is: 30,072.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,696.51 : 54,780.99 = 21,791.85 : x
  2. Step 2: Convert to fraction form
    39,696.51/54,780.99 = 21,791.85/x
  3. Step 3: Cross multiply
    39,696.51x = 54,780.99 × 21,791.85
  4. Step 4: Simplify right side
    39,696.51x = 1,193,779,116.93
  5. Step 5: Solve for x
    x = 1,193,779,116.93/39,696.51
  6. Step 6: Final answer
    x = 30,072.65

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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.