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Finding the Third Proportional to 11,380 and 15,806

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Solution

The third proportional to 11,380 and 15,806 is: 21,953.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,380 : 15,806 = 15,806 : x
  2. Step 2: Convert to fraction form
    11,380/15,806 = 15,806/x
  3. Step 3: Cross multiply
    11,380x = 15,806 × 15,806
  4. Step 4: Simplify right side
    11,380x = 249,829,636
  5. Step 5: Solve for x
    x = 249,829,636/11,380
  6. Step 6: Final answer
    x = 21,953.40

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.