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Finding the Fourth Proportional to 39,797.66, 54,922.11 and 21,893.42

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Solution

The fourth proportional to 39,797.66, 54,922.11 and 21,893.42 is: 30,213.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,797.66 : 54,922.11 = 21,893.42 : x
  2. Step 2: Convert to fraction form
    39,797.66/54,922.11 = 21,893.42/x
  3. Step 3: Cross multiply
    39,797.66x = 54,922.11 × 21,893.42
  4. Step 4: Simplify right side
    39,797.66x = 1,202,432,821.52
  5. Step 5: Solve for x
    x = 1,202,432,821.52/39,797.66
  6. Step 6: Final answer
    x = 30,213.66

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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.