Home / 39,789.50-54,910.48-21,884.96

Finding the Fourth Proportional to 39,789.50, 54,910.48 and 21,884.96

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Solution

The fourth proportional to 39,789.50, 54,910.48 and 21,884.96 is: 30,201.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,789.50 : 54,910.48 = 21,884.96 : x
  2. Step 2: Convert to fraction form
    39,789.50/54,910.48 = 21,884.96/x
  3. Step 3: Cross multiply
    39,789.50x = 54,910.48 × 21,884.96
  4. Step 4: Simplify right side
    39,789.50x = 1,201,713,689.09
  5. Step 5: Solve for x
    x = 1,201,713,689.09/39,789.50
  6. Step 6: Final answer
    x = 30,201.78

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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.