Home / 12,431.57-17,146.83-8,181.27

Finding the Fourth Proportional to 12,431.57, 17,146.83 and 8,181.27

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Solution

The fourth proportional to 12,431.57, 17,146.83 and 8,181.27 is: 11,284.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,431.57 : 17,146.83 = 8,181.27 : x
  2. Step 2: Convert to fraction form
    12,431.57/17,146.83 = 8,181.27/x
  3. Step 3: Cross multiply
    12,431.57x = 17,146.83 × 8,181.27
  4. Step 4: Simplify right side
    12,431.57x = 140,282,845.87
  5. Step 5: Solve for x
    x = 140,282,845.87/12,431.57
  6. Step 6: Final answer
    x = 11,284.40

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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.