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Finding the Fourth Proportional to 22,905.80, 34,358.70 and 20,294.60

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Solution

The fourth proportional to 22,905.80, 34,358.70 and 20,294.60 is: 30,441.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,905.80 : 34,358.70 = 20,294.60 : x
  2. Step 2: Convert to fraction form
    22,905.80/34,358.70 = 20,294.60/x
  3. Step 3: Cross multiply
    22,905.80x = 34,358.70 × 20,294.60
  4. Step 4: Simplify right side
    22,905.80x = 697,296,073.02
  5. Step 5: Solve for x
    x = 697,296,073.02/22,905.80
  6. Step 6: Final answer
    x = 30,441.90

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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.