Home / 11,991.99-16,557.44-7,517.55

Finding the Fourth Proportional to 11,991.99, 16,557.44 and 7,517.55

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Solution

The fourth proportional to 11,991.99, 16,557.44 and 7,517.55 is: 10,379.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,991.99 : 16,557.44 = 7,517.55 : x
  2. Step 2: Convert to fraction form
    11,991.99/16,557.44 = 7,517.55/x
  3. Step 3: Cross multiply
    11,991.99x = 16,557.44 × 7,517.55
  4. Step 4: Simplify right side
    11,991.99x = 124,471,345.48
  5. Step 5: Solve for x
    x = 124,471,345.48/11,991.99
  6. Step 6: Final answer
    x = 10,379.54

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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.