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Finding the Third Proportional to 14,808 and 21,987

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Solution

The third proportional to 14,808 and 21,987 is: 32,646.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,808 : 21,987 = 21,987 : x
  2. Step 2: Convert to fraction form
    14,808/21,987 = 21,987/x
  3. Step 3: Cross multiply
    14,808x = 21,987 × 21,987
  4. Step 4: Simplify right side
    14,808x = 483,428,169
  5. Step 5: Solve for x
    x = 483,428,169/14,808
  6. Step 6: Final answer
    x = 32,646.42

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.