Home / 39,791.80-54,910.98-21,885.65

Finding the Fourth Proportional to 39,791.80, 54,910.98 and 21,885.65

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Solution

The fourth proportional to 39,791.80, 54,910.98 and 21,885.65 is: 30,201.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,791.80 : 54,910.98 = 21,885.65 : x
  2. Step 2: Convert to fraction form
    39,791.80/54,910.98 = 21,885.65/x
  3. Step 3: Cross multiply
    39,791.80x = 54,910.98 × 21,885.65
  4. Step 4: Simplify right side
    39,791.80x = 1,201,762,420.80
  5. Step 5: Solve for x
    x = 1,201,762,420.80/39,791.80
  6. Step 6: Final answer
    x = 30,201.26

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1.5x scale

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.