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Finding the Third Proportional to 11,970 and 26,220

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Solution

The third proportional to 11,970 and 26,220 is: 57,434.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,970 : 26,220 = 26,220 : x
  2. Step 2: Convert to fraction form
    11,970/26,220 = 26,220/x
  3. Step 3: Cross multiply
    11,970x = 26,220 × 26,220
  4. Step 4: Simplify right side
    11,970x = 687,488,400
  5. Step 5: Solve for x
    x = 687,488,400/11,970
  6. Step 6: Final answer
    x = 57,434.29

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.