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Finding the Fourth Proportional to 9,997.92, 14,993.76 and 7,215.84

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Solution

The fourth proportional to 9,997.92, 14,993.76 and 7,215.84 is: 10,821.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,997.92 : 14,993.76 = 7,215.84 : x
  2. Step 2: Convert to fraction form
    9,997.92/14,993.76 = 7,215.84/x
  3. Step 3: Cross multiply
    9,997.92x = 14,993.76 × 7,215.84
  4. Step 4: Simplify right side
    9,997.92x = 108,192,573.16
  5. Step 5: Solve for x
    x = 108,192,573.16/9,997.92
  6. Step 6: Final answer
    x = 10,821.51

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.