Home / 11,174.80-15,395.28-7,811.68

Finding the Fourth Proportional to 11,174.80, 15,395.28 and 7,811.68

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Solution

The fourth proportional to 11,174.80, 15,395.28 and 7,811.68 is: 10,761.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,174.80 : 15,395.28 = 7,811.68 : x
  2. Step 2: Convert to fraction form
    11,174.80/15,395.28 = 7,811.68/x
  3. Step 3: Cross multiply
    11,174.80x = 15,395.28 × 7,811.68
  4. Step 4: Simplify right side
    11,174.80x = 120,263,000.87
  5. Step 5: Solve for x
    x = 120,263,000.87/11,174.80
  6. Step 6: Final answer
    x = 10,761.98

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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.