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Finding the Third Proportional to 15,288 and 28,656

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Solution

The third proportional to 15,288 and 28,656 is: 53,713.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,288 : 28,656 = 28,656 : x
  2. Step 2: Convert to fraction form
    15,288/28,656 = 28,656/x
  3. Step 3: Cross multiply
    15,288x = 28,656 × 28,656
  4. Step 4: Simplify right side
    15,288x = 821,166,336
  5. Step 5: Solve for x
    x = 821,166,336/15,288
  6. Step 6: Final answer
    x = 53,713.13

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Why These Related Problems?

These problems maintain the same ratio (1.87) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.