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Finding the Third Proportional to 8,420 and 17,392

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Solution

The third proportional to 8,420 and 17,392 is: 35,924.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420 : 17,392 = 17,392 : x
  2. Step 2: Convert to fraction form
    8,420/17,392 = 17,392/x
  3. Step 3: Cross multiply
    8,420x = 17,392 × 17,392
  4. Step 4: Simplify right side
    8,420x = 302,481,664
  5. Step 5: Solve for x
    x = 302,481,664/8,420
  6. Step 6: Final answer
    x = 35,924.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.