Home / 13,791.08-20,682.09-4,428.88

Finding the Fourth Proportional to 13,791.08, 20,682.09 and 4,428.88

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Solution

The fourth proportional to 13,791.08, 20,682.09 and 4,428.88 is: 6,641.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,791.08 : 20,682.09 = 4,428.88 : x
  2. Step 2: Convert to fraction form
    13,791.08/20,682.09 = 4,428.88/x
  3. Step 3: Cross multiply
    13,791.08x = 20,682.09 × 4,428.88
  4. Step 4: Simplify right side
    13,791.08x = 91,598,494.76
  5. Step 5: Solve for x
    x = 91,598,494.76/13,791.08
  6. Step 6: Final answer
    x = 6,641.87

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1.5x scale

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.