Home / 33,865.78-46,757.62-21,138.36

Finding the Fourth Proportional to 33,865.78, 46,757.62 and 21,138.36

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Solution

The fourth proportional to 33,865.78, 46,757.62 and 21,138.36 is: 29,185.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,865.78 : 46,757.62 = 21,138.36 : x
  2. Step 2: Convert to fraction form
    33,865.78/46,757.62 = 21,138.36/x
  3. Step 3: Cross multiply
    33,865.78x = 46,757.62 × 21,138.36
  4. Step 4: Simplify right side
    33,865.78x = 988,379,404.30
  5. Step 5: Solve for x
    x = 988,379,404.30/33,865.78
  6. Step 6: Final answer
    x = 29,185.20

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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.