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Finding the Third Proportional to 12,384 and 27,920

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Solution

The third proportional to 12,384 and 27,920 is: 62,946.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,384 : 27,920 = 27,920 : x
  2. Step 2: Convert to fraction form
    12,384/27,920 = 27,920/x
  3. Step 3: Cross multiply
    12,384x = 27,920 × 27,920
  4. Step 4: Simplify right side
    12,384x = 779,526,400
  5. Step 5: Solve for x
    x = 779,526,400/12,384
  6. Step 6: Final answer
    x = 62,946.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.25) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.