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Finding the Third Proportional to 8,920 and 13,060

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Solution

The third proportional to 8,920 and 13,060 is: 19,121.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,920 : 13,060 = 13,060 : x
  2. Step 2: Convert to fraction form
    8,920/13,060 = 13,060/x
  3. Step 3: Cross multiply
    8,920x = 13,060 × 13,060
  4. Step 4: Simplify right side
    8,920x = 170,563,600
  5. Step 5: Solve for x
    x = 170,563,600/8,920
  6. Step 6: Final answer
    x = 19,121.48

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.