Home / 11,945.76-17,918.64-3,180.24

Finding the Fourth Proportional to 11,945.76, 17,918.64 and 3,180.24

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Solution

The fourth proportional to 11,945.76, 17,918.64 and 3,180.24 is: 4,770.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,945.76 : 17,918.64 = 3,180.24 : x
  2. Step 2: Convert to fraction form
    11,945.76/17,918.64 = 3,180.24/x
  3. Step 3: Cross multiply
    11,945.76x = 17,918.64 × 3,180.24
  4. Step 4: Simplify right side
    11,945.76x = 56,985,575.67
  5. Step 5: Solve for x
    x = 56,985,575.67/11,945.76
  6. Step 6: Final answer
    x = 4,770.36

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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.