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Finding the Third Proportional to 12,138 and 26,658

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Solution

The third proportional to 12,138 and 26,658 is: 58,547.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138 : 26,658 = 26,658 : x
  2. Step 2: Convert to fraction form
    12,138/26,658 = 26,658/x
  3. Step 3: Cross multiply
    12,138x = 26,658 × 26,658
  4. Step 4: Simplify right side
    12,138x = 710,648,964
  5. Step 5: Solve for x
    x = 710,648,964/12,138
  6. Step 6: Final answer
    x = 58,547.45

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.