Home / 11,945.30-17,918.35-3,180.22

Finding the Fourth Proportional to 11,945.30, 17,918.35 and 3,180.22

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Solution

The fourth proportional to 11,945.30, 17,918.35 and 3,180.22 is: 4,770.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,945.30 : 17,918.35 = 3,180.22 : x
  2. Step 2: Convert to fraction form
    11,945.30/17,918.35 = 3,180.22/x
  3. Step 3: Cross multiply
    11,945.30x = 17,918.35 × 3,180.22
  4. Step 4: Simplify right side
    11,945.30x = 56,984,242.29
  5. Step 5: Solve for x
    x = 56,984,242.29/11,945.30
  6. Step 6: Final answer
    x = 4,770.43

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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.