Home / 39,757.68-54,867.05-21,854.05

Finding the Fourth Proportional to 39,757.68, 54,867.05 and 21,854.05

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Solution

The fourth proportional to 39,757.68, 54,867.05 and 21,854.05 is: 30,159.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,757.68 : 54,867.05 = 21,854.05 : x
  2. Step 2: Convert to fraction form
    39,757.68/54,867.05 = 21,854.05/x
  3. Step 3: Cross multiply
    39,757.68x = 54,867.05 × 21,854.05
  4. Step 4: Simplify right side
    39,757.68x = 1,199,067,144.78
  5. Step 5: Solve for x
    x = 1,199,067,144.78/39,757.68
  6. Step 6: Final answer
    x = 30,159.38

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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.