Home / 11,711.28-16,163.55-9,212.43

Finding the Fourth Proportional to 11,711.28, 16,163.55 and 9,212.43

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Solution

The fourth proportional to 11,711.28, 16,163.55 and 9,212.43 is: 12,714.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,711.28 : 16,163.55 = 9,212.43 : x
  2. Step 2: Convert to fraction form
    11,711.28/16,163.55 = 9,212.43/x
  3. Step 3: Cross multiply
    11,711.28x = 16,163.55 × 9,212.43
  4. Step 4: Simplify right side
    11,711.28x = 148,905,572.93
  5. Step 5: Solve for x
    x = 148,905,572.93/11,711.28
  6. Step 6: Final answer
    x = 12,714.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.