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Finding the Third Proportional to 18,900 and 26,440

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Solution

The third proportional to 18,900 and 26,440 is: 36,988.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,900 : 26,440 = 26,440 : x
  2. Step 2: Convert to fraction form
    18,900/26,440 = 26,440/x
  3. Step 3: Cross multiply
    18,900x = 26,440 × 26,440
  4. Step 4: Simplify right side
    18,900x = 699,073,600
  5. Step 5: Solve for x
    x = 699,073,600/18,900
  6. Step 6: Final answer
    x = 36,988.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.