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Finding the Third Proportional to 12,220 and 19,424

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Solution

The third proportional to 12,220 and 19,424 is: 30,874.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220 : 19,424 = 19,424 : x
  2. Step 2: Convert to fraction form
    12,220/19,424 = 19,424/x
  3. Step 3: Cross multiply
    12,220x = 19,424 × 19,424
  4. Step 4: Simplify right side
    12,220x = 377,291,776
  5. Step 5: Solve for x
    x = 377,291,776/12,220
  6. Step 6: Final answer
    x = 30,874.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.