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Finding the Third Proportional to 12,478 and 26,900

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Solution

The third proportional to 12,478 and 26,900 is: 57,990.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478 : 26,900 = 26,900 : x
  2. Step 2: Convert to fraction form
    12,478/26,900 = 26,900/x
  3. Step 3: Cross multiply
    12,478x = 26,900 × 26,900
  4. Step 4: Simplify right side
    12,478x = 723,610,000
  5. Step 5: Solve for x
    x = 723,610,000/12,478
  6. Step 6: Final answer
    x = 57,990.86

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.