Home / 13,784.24-20,676.20-3,396

Finding the Fourth Proportional to 13,784.24, 20,676.20 and 3,396

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Solution

The fourth proportional to 13,784.24, 20,676.20 and 3,396 is: 5,093.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,784.24 : 20,676.20 = 3,396 : x
  2. Step 2: Convert to fraction form
    13,784.24/20,676.20 = 3,396/x
  3. Step 3: Cross multiply
    13,784.24x = 20,676.20 × 3,396
  4. Step 4: Simplify right side
    13,784.24x = 70,216,375.20
  5. Step 5: Solve for x
    x = 70,216,375.20/13,784.24
  6. Step 6: Final answer
    x = 5,093.96

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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.