Home / 13,613.72-18,786.30-8,023.64

Finding the Fourth Proportional to 13,613.72, 18,786.30 and 8,023.64

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Solution

The fourth proportional to 13,613.72, 18,786.30 and 8,023.64 is: 11,072.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.72 : 18,786.30 = 8,023.64 : x
  2. Step 2: Convert to fraction form
    13,613.72/18,786.30 = 8,023.64/x
  3. Step 3: Cross multiply
    13,613.72x = 18,786.30 × 8,023.64
  4. Step 4: Simplify right side
    13,613.72x = 150,734,508.13
  5. Step 5: Solve for x
    x = 150,734,508.13/13,613.72
  6. Step 6: Final answer
    x = 11,072.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.