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Finding the Third Proportional to 21,707 and 29,316

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Solution

The third proportional to 21,707 and 29,316 is: 39,592.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,707 : 29,316 = 29,316 : x
  2. Step 2: Convert to fraction form
    21,707/29,316 = 29,316/x
  3. Step 3: Cross multiply
    21,707x = 29,316 × 29,316
  4. Step 4: Simplify right side
    21,707x = 859,427,856
  5. Step 5: Solve for x
    x = 859,427,856/21,707
  6. Step 6: Final answer
    x = 39,592.20

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.