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Finding the Fourth Proportional to 38,171, 52,675.98 and 21,404

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Solution

The fourth proportional to 38,171, 52,675.98 and 21,404 is: 29,537.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,171 : 52,675.98 = 21,404 : x
  2. Step 2: Convert to fraction form
    38,171/52,675.98 = 21,404/x
  3. Step 3: Cross multiply
    38,171x = 52,675.98 × 21,404
  4. Step 4: Simplify right side
    38,171x = 1,127,476,675.92
  5. Step 5: Solve for x
    x = 1,127,476,675.92/38,171
  6. Step 6: Final answer
    x = 29,537.52

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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.