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Finding the Fourth Proportional to 30,912.66, 46,372.39 and 9,847.80

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Solution

The fourth proportional to 30,912.66, 46,372.39 and 9,847.80 is: 14,772.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,912.66 : 46,372.39 = 9,847.80 : x
  2. Step 2: Convert to fraction form
    30,912.66/46,372.39 = 9,847.80/x
  3. Step 3: Cross multiply
    30,912.66x = 46,372.39 × 9,847.80
  4. Step 4: Simplify right side
    30,912.66x = 456,665,790.38
  5. Step 5: Solve for x
    x = 456,665,790.38/30,912.66
  6. Step 6: Final answer
    x = 14,772.78

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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.