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Finding the Fourth Proportional to 22,161, 33,241.53 and 21,603.30

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Solution

The fourth proportional to 22,161, 33,241.53 and 21,603.30 is: 32,404.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,161 : 33,241.53 = 21,603.30 : x
  2. Step 2: Convert to fraction form
    22,161/33,241.53 = 21,603.30/x
  3. Step 3: Cross multiply
    22,161x = 33,241.53 × 21,603.30
  4. Step 4: Simplify right side
    22,161x = 718,126,745.05
  5. Step 5: Solve for x
    x = 718,126,745.05/22,161
  6. Step 6: Final answer
    x = 32,404.98

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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.