Home / 13,855.55-20,791.60-5,091.35

Finding the Fourth Proportional to 13,855.55, 20,791.60 and 5,091.35

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Solution

The fourth proportional to 13,855.55, 20,791.60 and 5,091.35 is: 7,640.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,855.55 : 20,791.60 = 5,091.35 : x
  2. Step 2: Convert to fraction form
    13,855.55/20,791.60 = 5,091.35/x
  3. Step 3: Cross multiply
    13,855.55x = 20,791.60 × 5,091.35
  4. Step 4: Simplify right side
    13,855.55x = 105,857,195.97
  5. Step 5: Solve for x
    x = 105,857,195.97/13,855.55
  6. Step 6: Final answer
    x = 7,640.06

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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.