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Finding the Third Proportional to 14,905 and 20,887

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Solution

The third proportional to 14,905 and 20,887 is: 29,269.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,905 : 20,887 = 20,887 : x
  2. Step 2: Convert to fraction form
    14,905/20,887 = 20,887/x
  3. Step 3: Cross multiply
    14,905x = 20,887 × 20,887
  4. Step 4: Simplify right side
    14,905x = 436,266,769
  5. Step 5: Solve for x
    x = 436,266,769/14,905
  6. Step 6: Final answer
    x = 29,269.83

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.