Home / 11,781.56-17,679.36-4,760.61

Finding the Fourth Proportional to 11,781.56, 17,679.36 and 4,760.61

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Solution

The fourth proportional to 11,781.56, 17,679.36 and 4,760.61 is: 7,143.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,781.56 : 17,679.36 = 4,760.61 : x
  2. Step 2: Convert to fraction form
    11,781.56/17,679.36 = 4,760.61/x
  3. Step 3: Cross multiply
    11,781.56x = 17,679.36 × 4,760.61
  4. Step 4: Simplify right side
    11,781.56x = 84,164,538.01
  5. Step 5: Solve for x
    x = 84,164,538.01/11,781.56
  6. Step 6: Final answer
    x = 7,143.75

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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.