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Finding the Third Proportional to 15,604 and 21,022

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Solution

The third proportional to 15,604 and 21,022 is: 28,321.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,604 : 21,022 = 21,022 : x
  2. Step 2: Convert to fraction form
    15,604/21,022 = 21,022/x
  3. Step 3: Cross multiply
    15,604x = 21,022 × 21,022
  4. Step 4: Simplify right side
    15,604x = 441,924,484
  5. Step 5: Solve for x
    x = 441,924,484/15,604
  6. Step 6: Final answer
    x = 28,321.23

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.