Home / 39,741.88-54,843.96-21,837.28

Finding the Fourth Proportional to 39,741.88, 54,843.96 and 21,837.28

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Solution

The fourth proportional to 39,741.88, 54,843.96 and 21,837.28 is: 30,135.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,741.88 : 54,843.96 = 21,837.28 : x
  2. Step 2: Convert to fraction form
    39,741.88/54,843.96 = 21,837.28/x
  3. Step 3: Cross multiply
    39,741.88x = 54,843.96 × 21,837.28
  4. Step 4: Simplify right side
    39,741.88x = 1,197,642,910.83
  5. Step 5: Solve for x
    x = 1,197,642,910.83/39,741.88
  6. Step 6: Final answer
    x = 30,135.54

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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.