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Finding the Fourth Proportional to 14,850.78, 20,494.07 and 8,136.66

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Solution

The fourth proportional to 14,850.78, 20,494.07 and 8,136.66 is: 11,228.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,850.78 : 20,494.07 = 8,136.66 : x
  2. Step 2: Convert to fraction form
    14,850.78/20,494.07 = 8,136.66/x
  3. Step 3: Cross multiply
    14,850.78x = 20,494.07 × 8,136.66
  4. Step 4: Simplify right side
    14,850.78x = 166,753,299.95
  5. Step 5: Solve for x
    x = 166,753,299.95/14,850.78
  6. Step 6: Final answer
    x = 11,228.59

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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.