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Finding the Third Proportional to 9,979 and 14,970

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Solution

The third proportional to 9,979 and 14,970 is: 22,457.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,979 : 14,970 = 14,970 : x
  2. Step 2: Convert to fraction form
    9,979/14,970 = 14,970/x
  3. Step 3: Cross multiply
    9,979x = 14,970 × 14,970
  4. Step 4: Simplify right side
    9,979x = 224,100,900
  5. Step 5: Solve for x
    x = 224,100,900/9,979
  6. Step 6: Final answer
    x = 22,457.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.