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Finding the Third Proportional to 9,905.06 and 19,972.13

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Solution

The third proportional to 9,905.06 and 19,972.13 is: 40,270.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,905.06 : 19,972.13 = 19,972.13 : x
  2. Step 2: Convert to fraction form
    9,905.06/19,972.13 = 19,972.13/x
  3. Step 3: Cross multiply
    9,905.06x = 19,972.13 × 19,972.13
  4. Step 4: Simplify right side
    9,905.06x = 398,885,777.02
  5. Step 5: Solve for x
    x = 398,885,777.02/9,905.06
  6. Step 6: Final answer
    x = 40,270.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.02) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.