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Finding the Third Proportional to 14,695.50 and 20,988

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Solution

The third proportional to 14,695.50 and 20,988 is: 29,974.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,695.50 : 20,988 = 20,988 : x
  2. Step 2: Convert to fraction form
    14,695.50/20,988 = 20,988/x
  3. Step 3: Cross multiply
    14,695.50x = 20,988 × 20,988
  4. Step 4: Simplify right side
    14,695.50x = 440,496,144
  5. Step 5: Solve for x
    x = 440,496,144/14,695.50
  6. Step 6: Final answer
    x = 29,974.90

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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.