Home / 39,755.67-54,862.41-21,850.30

Finding the Fourth Proportional to 39,755.67, 54,862.41 and 21,850.30

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Solution

The fourth proportional to 39,755.67, 54,862.41 and 21,850.30 is: 30,153.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,755.67 : 54,862.41 = 21,850.30 : x
  2. Step 2: Convert to fraction form
    39,755.67/54,862.41 = 21,850.30/x
  3. Step 3: Cross multiply
    39,755.67x = 54,862.41 × 21,850.30
  4. Step 4: Simplify right side
    39,755.67x = 1,198,760,117.22
  5. Step 5: Solve for x
    x = 1,198,760,117.22/39,755.67
  6. Step 6: Final answer
    x = 30,153.19

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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.