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Finding the Third Proportional to 12,751.50 and 19,695

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Solution

The third proportional to 12,751.50 and 19,695 is: 30,419.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,751.50 : 19,695 = 19,695 : x
  2. Step 2: Convert to fraction form
    12,751.50/19,695 = 19,695/x
  3. Step 3: Cross multiply
    12,751.50x = 19,695 × 19,695
  4. Step 4: Simplify right side
    12,751.50x = 387,893,025
  5. Step 5: Solve for x
    x = 387,893,025/12,751.50
  6. Step 6: Final answer
    x = 30,419.40

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.