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Finding the Third Proportional to 14,915 and 20,904

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Solution

The third proportional to 14,915 and 20,904 is: 29,297.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,915 : 20,904 = 20,904 : x
  2. Step 2: Convert to fraction form
    14,915/20,904 = 20,904/x
  3. Step 3: Cross multiply
    14,915x = 20,904 × 20,904
  4. Step 4: Simplify right side
    14,915x = 436,977,216
  5. Step 5: Solve for x
    x = 436,977,216/14,915
  6. Step 6: Final answer
    x = 29,297.84

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.