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Finding the Fourth Proportional to 20,617.35, 30,942.44 and 7,473.48

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Solution

The fourth proportional to 20,617.35, 30,942.44 and 7,473.48 is: 11,216.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,617.35 : 30,942.44 = 7,473.48 : x
  2. Step 2: Convert to fraction form
    20,617.35/30,942.44 = 7,473.48/x
  3. Step 3: Cross multiply
    20,617.35x = 30,942.44 × 7,473.48
  4. Step 4: Simplify right side
    20,617.35x = 231,247,669.12
  5. Step 5: Solve for x
    x = 231,247,669.12/20,617.35
  6. Step 6: Final answer
    x = 11,216.17

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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.