Home / 11,129.97-16,669.44-7,222.53

Finding the Fourth Proportional to 11,129.97, 16,669.44 and 7,222.53

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Solution

The fourth proportional to 11,129.97, 16,669.44 and 7,222.53 is: 10,817.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.97 : 16,669.44 = 7,222.53 : x
  2. Step 2: Convert to fraction form
    11,129.97/16,669.44 = 7,222.53/x
  3. Step 3: Cross multiply
    11,129.97x = 16,669.44 × 7,222.53
  4. Step 4: Simplify right side
    11,129.97x = 120,395,530.48
  5. Step 5: Solve for x
    x = 120,395,530.48/11,129.97
  6. Step 6: Final answer
    x = 10,817.24

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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.