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Finding the Third Proportional to 14,709 and 31,889

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Solution

The third proportional to 14,709 and 31,889 is: 69,135.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,709 : 31,889 = 31,889 : x
  2. Step 2: Convert to fraction form
    14,709/31,889 = 31,889/x
  3. Step 3: Cross multiply
    14,709x = 31,889 × 31,889
  4. Step 4: Simplify right side
    14,709x = 1,016,908,321
  5. Step 5: Solve for x
    x = 1,016,908,321/14,709
  6. Step 6: Final answer
    x = 69,135.11

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.