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Finding the Third Proportional to 11,078.25 and 16,688.25

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Solution

The third proportional to 11,078.25 and 16,688.25 is: 25,139.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,078.25 : 16,688.25 = 16,688.25 : x
  2. Step 2: Convert to fraction form
    11,078.25/16,688.25 = 16,688.25/x
  3. Step 3: Cross multiply
    11,078.25x = 16,688.25 × 16,688.25
  4. Step 4: Simplify right side
    11,078.25x = 278,497,688.06
  5. Step 5: Solve for x
    x = 278,497,688.06/11,078.25
  6. Step 6: Final answer
    x = 25,139.14

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.