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Finding the Third Proportional to 13,520 and 20,752

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Solution

The third proportional to 13,520 and 20,752 is: 31,852.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,520 : 20,752 = 20,752 : x
  2. Step 2: Convert to fraction form
    13,520/20,752 = 20,752/x
  3. Step 3: Cross multiply
    13,520x = 20,752 × 20,752
  4. Step 4: Simplify right side
    13,520x = 430,645,504
  5. Step 5: Solve for x
    x = 430,645,504/13,520
  6. Step 6: Final answer
    x = 31,852.48

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.