Home / 13,516.72-20,268.32-8,185.20

Finding the Fourth Proportional to 13,516.72, 20,268.32 and 8,185.20

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Solution

The fourth proportional to 13,516.72, 20,268.32 and 8,185.20 is: 12,273.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,516.72 : 20,268.32 = 8,185.20 : x
  2. Step 2: Convert to fraction form
    13,516.72/20,268.32 = 8,185.20/x
  3. Step 3: Cross multiply
    13,516.72x = 20,268.32 × 8,185.20
  4. Step 4: Simplify right side
    13,516.72x = 165,900,252.86
  5. Step 5: Solve for x
    x = 165,900,252.86/13,516.72
  6. Step 6: Final answer
    x = 12,273.71

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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.