Home / 39,755.37-54,863.82-21,851.13

Finding the Fourth Proportional to 39,755.37, 54,863.82 and 21,851.13

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Solution

The fourth proportional to 39,755.37, 54,863.82 and 21,851.13 is: 30,155.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,755.37 : 54,863.82 = 21,851.13 : x
  2. Step 2: Convert to fraction form
    39,755.37/54,863.82 = 21,851.13/x
  3. Step 3: Cross multiply
    39,755.37x = 54,863.82 × 21,851.13
  4. Step 4: Simplify right side
    39,755.37x = 1,198,836,463.12
  5. Step 5: Solve for x
    x = 1,198,836,463.12/39,755.37
  6. Step 6: Final answer
    x = 30,155.33

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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.