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Finding the Fourth Proportional to 12,896.55, 17,800.02 and 8,179.92

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Solution

The fourth proportional to 12,896.55, 17,800.02 and 8,179.92 is: 11,290.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,896.55 : 17,800.02 = 8,179.92 : x
  2. Step 2: Convert to fraction form
    12,896.55/17,800.02 = 8,179.92/x
  3. Step 3: Cross multiply
    12,896.55x = 17,800.02 × 8,179.92
  4. Step 4: Simplify right side
    12,896.55x = 145,602,739.60
  5. Step 5: Solve for x
    x = 145,602,739.60/12,896.55
  6. Step 6: Final answer
    x = 11,290.05

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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.