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Finding the Third Proportional to 12,812 and 16,178

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Solution

The third proportional to 12,812 and 16,178 is: 20,428.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,812 : 16,178 = 16,178 : x
  2. Step 2: Convert to fraction form
    12,812/16,178 = 16,178/x
  3. Step 3: Cross multiply
    12,812x = 16,178 × 16,178
  4. Step 4: Simplify right side
    12,812x = 261,727,684
  5. Step 5: Solve for x
    x = 261,727,684/12,812
  6. Step 6: Final answer
    x = 20,428.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.26) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.