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Finding the Third Proportional to 13,120 and 18,440

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Solution

The third proportional to 13,120 and 18,440 is: 25,917.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120 : 18,440 = 18,440 : x
  2. Step 2: Convert to fraction form
    13,120/18,440 = 18,440/x
  3. Step 3: Cross multiply
    13,120x = 18,440 × 18,440
  4. Step 4: Simplify right side
    13,120x = 340,033,600
  5. Step 5: Solve for x
    x = 340,033,600/13,120
  6. Step 6: Final answer
    x = 25,917.20

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.