Home / 39,755.06-54,862.53-21,851.78

Finding the Fourth Proportional to 39,755.06, 54,862.53 and 21,851.78

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Solution

The fourth proportional to 39,755.06, 54,862.53 and 21,851.78 is: 30,155.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,755.06 : 54,862.53 = 21,851.78 : x
  2. Step 2: Convert to fraction form
    39,755.06/54,862.53 = 21,851.78/x
  3. Step 3: Cross multiply
    39,755.06x = 54,862.53 × 21,851.78
  4. Step 4: Simplify right side
    39,755.06x = 1,198,843,935.80
  5. Step 5: Solve for x
    x = 1,198,843,935.80/39,755.06
  6. Step 6: Final answer
    x = 30,155.76

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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.