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Finding the Third Proportional to 15,630 and 18,402

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Solution

The third proportional to 15,630 and 18,402 is: 21,665.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,630 : 18,402 = 18,402 : x
  2. Step 2: Convert to fraction form
    15,630/18,402 = 18,402/x
  3. Step 3: Cross multiply
    15,630x = 18,402 × 18,402
  4. Step 4: Simplify right side
    15,630x = 338,633,604
  5. Step 5: Solve for x
    x = 338,633,604/15,630
  6. Step 6: Final answer
    x = 21,665.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.