Home / 39,691.22-54,774.51-21,787.88

Finding the Fourth Proportional to 39,691.22, 54,774.51 and 21,787.88

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Solution

The fourth proportional to 39,691.22, 54,774.51 and 21,787.88 is: 30,067.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,691.22 : 54,774.51 = 21,787.88 : x
  2. Step 2: Convert to fraction form
    39,691.22/54,774.51 = 21,787.88/x
  3. Step 3: Cross multiply
    39,691.22x = 54,774.51 × 21,787.88
  4. Step 4: Simplify right side
    39,691.22x = 1,193,420,450.94
  5. Step 5: Solve for x
    x = 1,193,420,450.94/39,691.22
  6. Step 6: Final answer
    x = 30,067.62

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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.