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Finding the Fourth Proportional to 22,293.21, 30,764.97 and 12,221.58

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Solution

The fourth proportional to 22,293.21, 30,764.97 and 12,221.58 is: 16,865.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,293.21 : 30,764.97 = 12,221.58 : x
  2. Step 2: Convert to fraction form
    22,293.21/30,764.97 = 12,221.58/x
  3. Step 3: Cross multiply
    22,293.21x = 30,764.97 × 12,221.58
  4. Step 4: Simplify right side
    22,293.21x = 375,996,542.05
  5. Step 5: Solve for x
    x = 375,996,542.05/22,293.21
  6. Step 6: Final answer
    x = 16,865.97

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.