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Finding the Fourth Proportional to 21,863.67, 32,795.50 and 20,801.35

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Solution

The fourth proportional to 21,863.67, 32,795.50 and 20,801.35 is: 31,202.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,863.67 : 32,795.50 = 20,801.35 : x
  2. Step 2: Convert to fraction form
    21,863.67/32,795.50 = 20,801.35/x
  3. Step 3: Cross multiply
    21,863.67x = 32,795.50 × 20,801.35
  4. Step 4: Simplify right side
    21,863.67x = 682,190,781.92
  5. Step 5: Solve for x
    x = 682,190,781.92/21,863.67
  6. Step 6: Final answer
    x = 31,202.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.