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Finding the Third Proportional to 15,714 and 21,624

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Solution

The third proportional to 15,714 and 21,624 is: 29,756.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,714 : 21,624 = 21,624 : x
  2. Step 2: Convert to fraction form
    15,714/21,624 = 21,624/x
  3. Step 3: Cross multiply
    15,714x = 21,624 × 21,624
  4. Step 4: Simplify right side
    15,714x = 467,597,376
  5. Step 5: Solve for x
    x = 467,597,376/15,714
  6. Step 6: Final answer
    x = 29,756.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.