Home / 39,791.37-54,911.09-21,641.88

Finding the Fourth Proportional to 39,791.37, 54,911.09 and 21,641.88

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Solution

The fourth proportional to 39,791.37, 54,911.09 and 21,641.88 is: 29,865.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,791.37 : 54,911.09 = 21,641.88 : x
  2. Step 2: Convert to fraction form
    39,791.37/54,911.09 = 21,641.88/x
  3. Step 3: Cross multiply
    39,791.37x = 54,911.09 × 21,641.88
  4. Step 4: Simplify right side
    39,791.37x = 1,188,379,112.24
  5. Step 5: Solve for x
    x = 1,188,379,112.24/39,791.37
  6. Step 6: Final answer
    x = 29,865.25

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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.