Home / 11,213.91-16,831.80-8,556.57

Finding the Fourth Proportional to 11,213.91, 16,831.80 and 8,556.57

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Solution

The fourth proportional to 11,213.91, 16,831.80 and 8,556.57 is: 12,843.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,213.91 : 16,831.80 = 8,556.57 : x
  2. Step 2: Convert to fraction form
    11,213.91/16,831.80 = 8,556.57/x
  3. Step 3: Cross multiply
    11,213.91x = 16,831.80 × 8,556.57
  4. Step 4: Simplify right side
    11,213.91x = 144,022,474.93
  5. Step 5: Solve for x
    x = 144,022,474.93/11,213.91
  6. Step 6: Final answer
    x = 12,843.20

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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.