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Finding the Third Proportional to 16,324 and 21,712

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Solution

The third proportional to 16,324 and 21,712 is: 28,878.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,324 : 21,712 = 21,712 : x
  2. Step 2: Convert to fraction form
    16,324/21,712 = 21,712/x
  3. Step 3: Cross multiply
    16,324x = 21,712 × 21,712
  4. Step 4: Simplify right side
    16,324x = 471,410,944
  5. Step 5: Solve for x
    x = 471,410,944/16,324
  6. Step 6: Final answer
    x = 28,878.40

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.