Home / 13,587.72-20,381.57-3,727.77

Finding the Fourth Proportional to 13,587.72, 20,381.57 and 3,727.77

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Solution

The fourth proportional to 13,587.72, 20,381.57 and 3,727.77 is: 5,591.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,587.72 : 20,381.57 = 3,727.77 : x
  2. Step 2: Convert to fraction form
    13,587.72/20,381.57 = 3,727.77/x
  3. Step 3: Cross multiply
    13,587.72x = 20,381.57 × 3,727.77
  4. Step 4: Simplify right side
    13,587.72x = 75,977,786.56
  5. Step 5: Solve for x
    x = 75,977,786.56/13,587.72
  6. Step 6: Final answer
    x = 5,591.65

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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.