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Finding the Third Proportional to 10,419 and 14,913

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Solution

The third proportional to 10,419 and 14,913 is: 21,345.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,419 : 14,913 = 14,913 : x
  2. Step 2: Convert to fraction form
    10,419/14,913 = 14,913/x
  3. Step 3: Cross multiply
    10,419x = 14,913 × 14,913
  4. Step 4: Simplify right side
    10,419x = 222,397,569
  5. Step 5: Solve for x
    x = 222,397,569/10,419
  6. Step 6: Final answer
    x = 21,345.39

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.