Home / 12,771.96-19,163.70-6,921.72

Finding the Fourth Proportional to 12,771.96, 19,163.70 and 6,921.72

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Solution

The fourth proportional to 12,771.96, 19,163.70 and 6,921.72 is: 10,385.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,771.96 : 19,163.70 = 6,921.72 : x
  2. Step 2: Convert to fraction form
    12,771.96/19,163.70 = 6,921.72/x
  3. Step 3: Cross multiply
    12,771.96x = 19,163.70 × 6,921.72
  4. Step 4: Simplify right side
    12,771.96x = 132,645,765.56
  5. Step 5: Solve for x
    x = 132,645,765.56/12,771.96
  6. Step 6: Final answer
    x = 10,385.70

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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.