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Finding the Third Proportional to 12,987.75 and 19,604.25

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Solution

The third proportional to 12,987.75 and 19,604.25 is: 29,591.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,987.75 : 19,604.25 = 19,604.25 : x
  2. Step 2: Convert to fraction form
    12,987.75/19,604.25 = 19,604.25/x
  3. Step 3: Cross multiply
    12,987.75x = 19,604.25 × 19,604.25
  4. Step 4: Simplify right side
    12,987.75x = 384,326,618.06
  5. Step 5: Solve for x
    x = 384,326,618.06/12,987.75
  6. Step 6: Final answer
    x = 29,591.47

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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.