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Finding the Third Proportional to 9,621.56 and 19,999.13

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Solution

The third proportional to 9,621.56 and 19,999.13 is: 41,569.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,621.56 : 19,999.13 = 19,999.13 : x
  2. Step 2: Convert to fraction form
    9,621.56/19,999.13 = 19,999.13/x
  3. Step 3: Cross multiply
    9,621.56x = 19,999.13 × 19,999.13
  4. Step 4: Simplify right side
    9,621.56x = 399,965,000.77
  5. Step 5: Solve for x
    x = 399,965,000.77/9,621.56
  6. Step 6: Final answer
    x = 41,569.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.