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Finding the Third Proportional to 15,211.13 and 21,348.56

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Solution

The third proportional to 15,211.13 and 21,348.56 is: 29,962.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,211.13 : 21,348.56 = 21,348.56 : x
  2. Step 2: Convert to fraction form
    15,211.13/21,348.56 = 21,348.56/x
  3. Step 3: Cross multiply
    15,211.13x = 21,348.56 × 21,348.56
  4. Step 4: Simplify right side
    15,211.13x = 455,761,120.82
  5. Step 5: Solve for x
    x = 455,761,120.82/15,211.13
  6. Step 6: Final answer
    x = 29,962.35

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.