Home / 13,885.11-20,831.85-6,493.86

Finding the Fourth Proportional to 13,885.11, 20,831.85 and 6,493.86

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Solution

The fourth proportional to 13,885.11, 20,831.85 and 6,493.86 is: 9,742.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,885.11 : 20,831.85 = 6,493.86 : x
  2. Step 2: Convert to fraction form
    13,885.11/20,831.85 = 6,493.86/x
  3. Step 3: Cross multiply
    13,885.11x = 20,831.85 × 6,493.86
  4. Step 4: Simplify right side
    13,885.11x = 135,279,117.44
  5. Step 5: Solve for x
    x = 135,279,117.44/13,885.11
  6. Step 6: Final answer
    x = 9,742.75

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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.