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Finding the Fourth Proportional to 21,836.70, 32,755.05 and 9,354.60

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Solution

The fourth proportional to 21,836.70, 32,755.05 and 9,354.60 is: 14,031.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,836.70 : 32,755.05 = 9,354.60 : x
  2. Step 2: Convert to fraction form
    21,836.70/32,755.05 = 9,354.60/x
  3. Step 3: Cross multiply
    21,836.70x = 32,755.05 × 9,354.60
  4. Step 4: Simplify right side
    21,836.70x = 306,410,390.73
  5. Step 5: Solve for x
    x = 306,410,390.73/21,836.70
  6. Step 6: Final answer
    x = 14,031.90

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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.