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Finding the Fourth Proportional to 16,516.80, 24,775.20 and 8,193.60

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Solution

The fourth proportional to 16,516.80, 24,775.20 and 8,193.60 is: 12,290.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,516.80 : 24,775.20 = 8,193.60 : x
  2. Step 2: Convert to fraction form
    16,516.80/24,775.20 = 8,193.60/x
  3. Step 3: Cross multiply
    16,516.80x = 24,775.20 × 8,193.60
  4. Step 4: Simplify right side
    16,516.80x = 202,998,078.72
  5. Step 5: Solve for x
    x = 202,998,078.72/16,516.80
  6. Step 6: Final answer
    x = 12,290.40

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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.