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Finding the Third Proportional to 15,247 and 20,236

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Solution

The third proportional to 15,247 and 20,236 is: 26,857.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,247 : 20,236 = 20,236 : x
  2. Step 2: Convert to fraction form
    15,247/20,236 = 20,236/x
  3. Step 3: Cross multiply
    15,247x = 20,236 × 20,236
  4. Step 4: Simplify right side
    15,247x = 409,495,696
  5. Step 5: Solve for x
    x = 409,495,696/15,247
  6. Step 6: Final answer
    x = 26,857.46

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.