Home / 13,727.72-20,619.23-8,191.87

Finding the Fourth Proportional to 13,727.72, 20,619.23 and 8,191.87

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Solution

The fourth proportional to 13,727.72, 20,619.23 and 8,191.87 is: 12,304.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,727.72 : 20,619.23 = 8,191.87 : x
  2. Step 2: Convert to fraction form
    13,727.72/20,619.23 = 8,191.87/x
  3. Step 3: Cross multiply
    13,727.72x = 20,619.23 × 8,191.87
  4. Step 4: Simplify right side
    13,727.72x = 168,910,115.26
  5. Step 5: Solve for x
    x = 168,910,115.26/13,727.72
  6. Step 6: Final answer
    x = 12,304.31

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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.