Home / 20,745.21-31,090.48-7,584.94

Finding the Fourth Proportional to 20,745.21, 31,090.48 and 7,584.94

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Solution

The fourth proportional to 20,745.21, 31,090.48 and 7,584.94 is: 11,367.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745.21 : 31,090.48 = 7,584.94 : x
  2. Step 2: Convert to fraction form
    20,745.21/31,090.48 = 7,584.94/x
  3. Step 3: Cross multiply
    20,745.21x = 31,090.48 × 7,584.94
  4. Step 4: Simplify right side
    20,745.21x = 235,819,487.94
  5. Step 5: Solve for x
    x = 235,819,487.94/20,745.21
  6. Step 6: Final answer
    x = 11,367.42

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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.