Home / 13,684.76-20,610.11-12,143.96

Finding the Fourth Proportional to 13,684.76, 20,610.11 and 12,143.96

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Solution

The fourth proportional to 13,684.76, 20,610.11 and 12,143.96 is: 18,289.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,684.76 : 20,610.11 = 12,143.96 : x
  2. Step 2: Convert to fraction form
    13,684.76/20,610.11 = 12,143.96/x
  3. Step 3: Cross multiply
    13,684.76x = 20,610.11 × 12,143.96
  4. Step 4: Simplify right side
    13,684.76x = 250,288,351.44
  5. Step 5: Solve for x
    x = 250,288,351.44/13,684.76
  6. Step 6: Final answer
    x = 18,289.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.