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Finding the Fourth Proportional to 22,404.60, 33,606.90 and 18,905.40

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Solution

The fourth proportional to 22,404.60, 33,606.90 and 18,905.40 is: 28,358.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,404.60 : 33,606.90 = 18,905.40 : x
  2. Step 2: Convert to fraction form
    22,404.60/33,606.90 = 18,905.40/x
  3. Step 3: Cross multiply
    22,404.60x = 33,606.90 × 18,905.40
  4. Step 4: Simplify right side
    22,404.60x = 635,351,887.26
  5. Step 5: Solve for x
    x = 635,351,887.26/22,404.60
  6. Step 6: Final answer
    x = 28,358.10

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