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Finding the Third Proportional to 8,820 and 19,120

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Solution

The third proportional to 8,820 and 19,120 is: 41,448.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,820 : 19,120 = 19,120 : x
  2. Step 2: Convert to fraction form
    8,820/19,120 = 19,120/x
  3. Step 3: Cross multiply
    8,820x = 19,120 × 19,120
  4. Step 4: Simplify right side
    8,820x = 365,574,400
  5. Step 5: Solve for x
    x = 365,574,400/8,820
  6. Step 6: Final answer
    x = 41,448.34

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.