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Finding the Third Proportional to 8,474 and 13,487

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Solution

The third proportional to 8,474 and 13,487 is: 21,465.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,474 : 13,487 = 13,487 : x
  2. Step 2: Convert to fraction form
    8,474/13,487 = 13,487/x
  3. Step 3: Cross multiply
    8,474x = 13,487 × 13,487
  4. Step 4: Simplify right side
    8,474x = 181,899,169
  5. Step 5: Solve for x
    x = 181,899,169/8,474
  6. Step 6: Final answer
    x = 21,465.56

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.