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Finding the Third Proportional to 8,646 and 12,955

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Solution

The third proportional to 8,646 and 12,955 is: 19,411.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,646 : 12,955 = 12,955 : x
  2. Step 2: Convert to fraction form
    8,646/12,955 = 12,955/x
  3. Step 3: Cross multiply
    8,646x = 12,955 × 12,955
  4. Step 4: Simplify right side
    8,646x = 167,832,025
  5. Step 5: Solve for x
    x = 167,832,025/8,646
  6. Step 6: Final answer
    x = 19,411.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.