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Finding the Third Proportional to 19,551 and 31,479

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Solution

The third proportional to 19,551 and 31,479 is: 50,684.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,551 : 31,479 = 31,479 : x
  2. Step 2: Convert to fraction form
    19,551/31,479 = 31,479/x
  3. Step 3: Cross multiply
    19,551x = 31,479 × 31,479
  4. Step 4: Simplify right side
    19,551x = 990,927,441
  5. Step 5: Solve for x
    x = 990,927,441/19,551
  6. Step 6: Final answer
    x = 50,684.23

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.