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Finding the Third Proportional to 15,290.50 and 21,532

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Solution

The third proportional to 15,290.50 and 21,532 is: 30,321.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,290.50 : 21,532 = 21,532 : x
  2. Step 2: Convert to fraction form
    15,290.50/21,532 = 21,532/x
  3. Step 3: Cross multiply
    15,290.50x = 21,532 × 21,532
  4. Step 4: Simplify right side
    15,290.50x = 463,627,024
  5. Step 5: Solve for x
    x = 463,627,024/15,290.50
  6. Step 6: Final answer
    x = 30,321.25

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.