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Finding the Fourth Proportional to 30,992.87, 42,770.22 and 16,845.68

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Solution

The fourth proportional to 30,992.87, 42,770.22 and 16,845.68 is: 23,247.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,992.87 : 42,770.22 = 16,845.68 : x
  2. Step 2: Convert to fraction form
    30,992.87/42,770.22 = 16,845.68/x
  3. Step 3: Cross multiply
    30,992.87x = 42,770.22 × 16,845.68
  4. Step 4: Simplify right side
    30,992.87x = 720,493,439.65
  5. Step 5: Solve for x
    x = 720,493,439.65/30,992.87
  6. Step 6: Final answer
    x = 23,247.07

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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.