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Finding the Third Proportional to 8,742 and 19,482

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Solution

The third proportional to 8,742 and 19,482 is: 43,416.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,742 : 19,482 = 19,482 : x
  2. Step 2: Convert to fraction form
    8,742/19,482 = 19,482/x
  3. Step 3: Cross multiply
    8,742x = 19,482 × 19,482
  4. Step 4: Simplify right side
    8,742x = 379,548,324
  5. Step 5: Solve for x
    x = 379,548,324/8,742
  6. Step 6: Final answer
    x = 43,416.65

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Why These Related Problems?

These problems maintain the same ratio (2.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.