Home / 13,157.24-18,169.11-8,449.72

Finding the Fourth Proportional to 13,157.24, 18,169.11 and 8,449.72

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Solution

The fourth proportional to 13,157.24, 18,169.11 and 8,449.72 is: 11,668.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,157.24 : 18,169.11 = 8,449.72 : x
  2. Step 2: Convert to fraction form
    13,157.24/18,169.11 = 8,449.72/x
  3. Step 3: Cross multiply
    13,157.24x = 18,169.11 × 8,449.72
  4. Step 4: Simplify right side
    13,157.24x = 153,523,846.73
  5. Step 5: Solve for x
    x = 153,523,846.73/13,157.24
  6. Step 6: Final answer
    x = 11,668.40

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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.