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Finding the Third Proportional to 12,740 and 26,440

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Solution

The third proportional to 12,740 and 26,440 is: 54,872.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,740 : 26,440 = 26,440 : x
  2. Step 2: Convert to fraction form
    12,740/26,440 = 26,440/x
  3. Step 3: Cross multiply
    12,740x = 26,440 × 26,440
  4. Step 4: Simplify right side
    12,740x = 699,073,600
  5. Step 5: Solve for x
    x = 699,073,600/12,740
  6. Step 6: Final answer
    x = 54,872.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.