Home / 13,786.29-20,680.25-3,924.86

Finding the Fourth Proportional to 13,786.29, 20,680.25 and 3,924.86

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Solution

The fourth proportional to 13,786.29, 20,680.25 and 3,924.86 is: 5,887.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,786.29 : 20,680.25 = 3,924.86 : x
  2. Step 2: Convert to fraction form
    13,786.29/20,680.25 = 3,924.86/x
  3. Step 3: Cross multiply
    13,786.29x = 20,680.25 × 3,924.86
  4. Step 4: Simplify right side
    13,786.29x = 81,166,962.99
  5. Step 5: Solve for x
    x = 81,166,962.99/13,786.29
  6. Step 6: Final answer
    x = 5,887.51

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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.