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Finding the Third Proportional to 9,990 and 15,373.13

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Solution

The third proportional to 9,990 and 15,373.13 is: 23,656.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,990 : 15,373.13 = 15,373.13 : x
  2. Step 2: Convert to fraction form
    9,990/15,373.13 = 15,373.13/x
  3. Step 3: Cross multiply
    9,990x = 15,373.13 × 15,373.13
  4. Step 4: Simplify right side
    9,990x = 236,332,972.27
  5. Step 5: Solve for x
    x = 236,332,972.27/9,990
  6. Step 6: Final answer
    x = 23,656.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.