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Finding the Fourth Proportional to 39,798.04, 54,922.14 and 21,893.04

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Solution

The fourth proportional to 39,798.04, 54,922.14 and 21,893.04 is: 30,212.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,798.04 : 54,922.14 = 21,893.04 : x
  2. Step 2: Convert to fraction form
    39,798.04/54,922.14 = 21,893.04/x
  3. Step 3: Cross multiply
    39,798.04x = 54,922.14 × 21,893.04
  4. Step 4: Simplify right side
    39,798.04x = 1,202,412,498.44
  5. Step 5: Solve for x
    x = 1,202,412,498.44/39,798.04
  6. Step 6: Final answer
    x = 30,212.86

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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.