Home / 39,694.98-54,779.76-21,791.64

Finding the Fourth Proportional to 39,694.98, 54,779.76 and 21,791.64

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Solution

The fourth proportional to 39,694.98, 54,779.76 and 21,791.64 is: 30,072.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,694.98 : 54,779.76 = 21,791.64 : x
  2. Step 2: Convert to fraction form
    39,694.98/54,779.76 = 21,791.64/x
  3. Step 3: Cross multiply
    39,694.98x = 54,779.76 × 21,791.64
  4. Step 4: Simplify right side
    39,694.98x = 1,193,740,809.21
  5. Step 5: Solve for x
    x = 1,193,740,809.21/39,694.98
  6. Step 6: Final answer
    x = 30,072.84

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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.