Home / 11,817.22-17,721.42-3,918.28

Finding the Fourth Proportional to 11,817.22, 17,721.42 and 3,918.28

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Solution

The fourth proportional to 11,817.22, 17,721.42 and 3,918.28 is: 5,875.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,817.22 : 17,721.42 = 3,918.28 : x
  2. Step 2: Convert to fraction form
    11,817.22/17,721.42 = 3,918.28/x
  3. Step 3: Cross multiply
    11,817.22x = 17,721.42 × 3,918.28
  4. Step 4: Simplify right side
    11,817.22x = 69,437,485.56
  5. Step 5: Solve for x
    x = 69,437,485.56/11,817.22
  6. Step 6: Final answer
    x = 5,875.96

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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.