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Finding the Third Proportional to 12,700 and 20,276

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Solution

The third proportional to 12,700 and 20,276 is: 32,371.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,700 : 20,276 = 20,276 : x
  2. Step 2: Convert to fraction form
    12,700/20,276 = 20,276/x
  3. Step 3: Cross multiply
    12,700x = 20,276 × 20,276
  4. Step 4: Simplify right side
    12,700x = 411,116,176
  5. Step 5: Solve for x
    x = 411,116,176/12,700
  6. Step 6: Final answer
    x = 32,371.35

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.