Home / 13,351.05-20,029.77-3,991.86

Finding the Fourth Proportional to 13,351.05, 20,029.77 and 3,991.86

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Solution

The fourth proportional to 13,351.05, 20,029.77 and 3,991.86 is: 5,988.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,351.05 : 20,029.77 = 3,991.86 : x
  2. Step 2: Convert to fraction form
    13,351.05/20,029.77 = 3,991.86/x
  3. Step 3: Cross multiply
    13,351.05x = 20,029.77 × 3,991.86
  4. Step 4: Simplify right side
    13,351.05x = 79,956,037.67
  5. Step 5: Solve for x
    x = 79,956,037.67/13,351.05
  6. Step 6: Final answer
    x = 5,988.75

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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.