Home / 39,778.97-54,893.09-21,874.73

Finding the Fourth Proportional to 39,778.97, 54,893.09 and 21,874.73

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Solution

The fourth proportional to 39,778.97, 54,893.09 and 21,874.73 is: 30,186.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,778.97 : 54,893.09 = 21,874.73 : x
  2. Step 2: Convert to fraction form
    39,778.97/54,893.09 = 21,874.73/x
  3. Step 3: Cross multiply
    39,778.97x = 54,893.09 × 21,874.73
  4. Step 4: Simplify right side
    39,778.97x = 1,200,771,302.84
  5. Step 5: Solve for x
    x = 1,200,771,302.84/39,778.97
  6. Step 6: Final answer
    x = 30,186.09

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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.