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Finding the Third Proportional to 12,948 and 22,420

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Solution

The third proportional to 12,948 and 22,420 is: 38,821.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,948 : 22,420 = 22,420 : x
  2. Step 2: Convert to fraction form
    12,948/22,420 = 22,420/x
  3. Step 3: Cross multiply
    12,948x = 22,420 × 22,420
  4. Step 4: Simplify right side
    12,948x = 502,656,400
  5. Step 5: Solve for x
    x = 502,656,400/12,948
  6. Step 6: Final answer
    x = 38,821.16

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Why These Related Problems?

These problems maintain the same ratio (1.73) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.