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Finding the Third Proportional to 14,625 and 21,391

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Solution

The third proportional to 14,625 and 21,391 is: 31,287.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,625 : 21,391 = 21,391 : x
  2. Step 2: Convert to fraction form
    14,625/21,391 = 21,391/x
  3. Step 3: Cross multiply
    14,625x = 21,391 × 21,391
  4. Step 4: Simplify right side
    14,625x = 457,574,881
  5. Step 5: Solve for x
    x = 457,574,881/14,625
  6. Step 6: Final answer
    x = 31,287.17

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.