Home / 9,997.09-13,795.57-5,520.78

Finding the Fourth Proportional to 9,997.09, 13,795.57 and 5,520.78

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Solution

The fourth proportional to 9,997.09, 13,795.57 and 5,520.78 is: 7,618.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,997.09 : 13,795.57 = 5,520.78 : x
  2. Step 2: Convert to fraction form
    9,997.09/13,795.57 = 5,520.78/x
  3. Step 3: Cross multiply
    9,997.09x = 13,795.57 × 5,520.78
  4. Step 4: Simplify right side
    9,997.09x = 76,162,237.97
  5. Step 5: Solve for x
    x = 76,162,237.97/9,997.09
  6. Step 6: Final answer
    x = 7,618.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.