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Finding the Third Proportional to 18,420 and 26,352

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Solution

The third proportional to 18,420 and 26,352 is: 37,699.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,420 : 26,352 = 26,352 : x
  2. Step 2: Convert to fraction form
    18,420/26,352 = 26,352/x
  3. Step 3: Cross multiply
    18,420x = 26,352 × 26,352
  4. Step 4: Simplify right side
    18,420x = 694,427,904
  5. Step 5: Solve for x
    x = 694,427,904/18,420
  6. Step 6: Final answer
    x = 37,699.67

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.