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Finding the Third Proportional to 9,539.88 and 20,721.75

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Solution

The third proportional to 9,539.88 and 20,721.75 is: 45,010.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,539.88 : 20,721.75 = 20,721.75 : x
  2. Step 2: Convert to fraction form
    9,539.88/20,721.75 = 20,721.75/x
  3. Step 3: Cross multiply
    9,539.88x = 20,721.75 × 20,721.75
  4. Step 4: Simplify right side
    9,539.88x = 429,390,923.06
  5. Step 5: Solve for x
    x = 429,390,923.06/9,539.88
  6. Step 6: Final answer
    x = 45,010.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.