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Finding the Third Proportional to 14,787 and 21,630

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Solution

The third proportional to 14,787 and 21,630 is: 31,639.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,787 : 21,630 = 21,630 : x
  2. Step 2: Convert to fraction form
    14,787/21,630 = 21,630/x
  3. Step 3: Cross multiply
    14,787x = 21,630 × 21,630
  4. Step 4: Simplify right side
    14,787x = 467,856,900
  5. Step 5: Solve for x
    x = 467,856,900/14,787
  6. Step 6: Final answer
    x = 31,639.74

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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.