Home / 13,351.72-20,027.31-3,991.77

Finding the Fourth Proportional to 13,351.72, 20,027.31 and 3,991.77

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Solution

The fourth proportional to 13,351.72, 20,027.31 and 3,991.77 is: 5,987.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,351.72 : 20,027.31 = 3,991.77 : x
  2. Step 2: Convert to fraction form
    13,351.72/20,027.31 = 3,991.77/x
  3. Step 3: Cross multiply
    13,351.72x = 20,027.31 × 3,991.77
  4. Step 4: Simplify right side
    13,351.72x = 79,944,415.24
  5. Step 5: Solve for x
    x = 79,944,415.24/13,351.72
  6. Step 6: Final answer
    x = 5,987.57

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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.