Home / 13,831.39-20,745.15-8,567.38

Finding the Fourth Proportional to 13,831.39, 20,745.15 and 8,567.38

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Solution

The fourth proportional to 13,831.39, 20,745.15 and 8,567.38 is: 12,849.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,831.39 : 20,745.15 = 8,567.38 : x
  2. Step 2: Convert to fraction form
    13,831.39/20,745.15 = 8,567.38/x
  3. Step 3: Cross multiply
    13,831.39x = 20,745.15 × 8,567.38
  4. Step 4: Simplify right side
    13,831.39x = 177,731,583.21
  5. Step 5: Solve for x
    x = 177,731,583.21/13,831.39
  6. Step 6: Final answer
    x = 12,849.87

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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.