Home / 13,342.72-20,013.36-4,108

Finding the Fourth Proportional to 13,342.72, 20,013.36 and 4,108

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Solution

The fourth proportional to 13,342.72, 20,013.36 and 4,108 is: 6,161.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,342.72 : 20,013.36 = 4,108 : x
  2. Step 2: Convert to fraction form
    13,342.72/20,013.36 = 4,108/x
  3. Step 3: Cross multiply
    13,342.72x = 20,013.36 × 4,108
  4. Step 4: Simplify right side
    13,342.72x = 82,214,882.88
  5. Step 5: Solve for x
    x = 82,214,882.88/13,342.72
  6. Step 6: Final answer
    x = 6,161.78

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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.