Home / 28,388.82-42,588.34-11,739.80

Finding the Fourth Proportional to 28,388.82, 42,588.34 and 11,739.80

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Solution

The fourth proportional to 28,388.82, 42,588.34 and 11,739.80 is: 17,611.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,388.82 : 42,588.34 = 11,739.80 : x
  2. Step 2: Convert to fraction form
    28,388.82/42,588.34 = 11,739.80/x
  3. Step 3: Cross multiply
    28,388.82x = 42,588.34 × 11,739.80
  4. Step 4: Simplify right side
    28,388.82x = 499,978,593.93
  5. Step 5: Solve for x
    x = 499,978,593.93/28,388.82
  6. Step 6: Final answer
    x = 17,611.81

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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.