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Finding the Third Proportional to 6,312 and 13,859

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Solution

The third proportional to 6,312 and 13,859 is: 30,429.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,312 : 13,859 = 13,859 : x
  2. Step 2: Convert to fraction form
    6,312/13,859 = 13,859/x
  3. Step 3: Cross multiply
    6,312x = 13,859 × 13,859
  4. Step 4: Simplify right side
    6,312x = 192,071,881
  5. Step 5: Solve for x
    x = 192,071,881/6,312
  6. Step 6: Final answer
    x = 30,429.64

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.