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Finding the Third Proportional to 9,946 and 19,730

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Solution

The third proportional to 9,946 and 19,730 is: 39,138.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,946 : 19,730 = 19,730 : x
  2. Step 2: Convert to fraction form
    9,946/19,730 = 19,730/x
  3. Step 3: Cross multiply
    9,946x = 19,730 × 19,730
  4. Step 4: Simplify right side
    9,946x = 389,272,900
  5. Step 5: Solve for x
    x = 389,272,900/9,946
  6. Step 6: Final answer
    x = 39,138.64

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Why These Related Problems?

These problems maintain the same ratio (1.98) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.