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Finding the Third Proportional to 12,705 and 14,817

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Solution

The third proportional to 12,705 and 14,817 is: 17,280.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,705 : 14,817 = 14,817 : x
  2. Step 2: Convert to fraction form
    12,705/14,817 = 14,817/x
  3. Step 3: Cross multiply
    12,705x = 14,817 × 14,817
  4. Step 4: Simplify right side
    12,705x = 219,543,489
  5. Step 5: Solve for x
    x = 219,543,489/12,705
  6. Step 6: Final answer
    x = 17,280.09

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Why These Related Problems?

These problems maintain the same ratio (1.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.