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Finding the Third Proportional to 8,920 and 12,148

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Solution

The third proportional to 8,920 and 12,148 is: 16,544.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,920 : 12,148 = 12,148 : x
  2. Step 2: Convert to fraction form
    8,920/12,148 = 12,148/x
  3. Step 3: Cross multiply
    8,920x = 12,148 × 12,148
  4. Step 4: Simplify right side
    8,920x = 147,573,904
  5. Step 5: Solve for x
    x = 147,573,904/8,920
  6. Step 6: Final answer
    x = 16,544.16

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.