Home / 39,755.18-54,863.19-21,850.66

Finding the Fourth Proportional to 39,755.18, 54,863.19 and 21,850.66

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Solution

The fourth proportional to 39,755.18, 54,863.19 and 21,850.66 is: 30,154.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,755.18 : 54,863.19 = 21,850.66 : x
  2. Step 2: Convert to fraction form
    39,755.18/54,863.19 = 21,850.66/x
  3. Step 3: Cross multiply
    39,755.18x = 54,863.19 × 21,850.66
  4. Step 4: Simplify right side
    39,755.18x = 1,198,796,911.21
  5. Step 5: Solve for x
    x = 1,198,796,911.21/39,755.18
  6. Step 6: Final answer
    x = 30,154.48

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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.