Home / 13,199.22-19,771.30-7,917.48

Finding the Fourth Proportional to 13,199.22, 19,771.30 and 7,917.48

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Solution

The fourth proportional to 13,199.22, 19,771.30 and 7,917.48 is: 11,859.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,199.22 : 19,771.30 = 7,917.48 : x
  2. Step 2: Convert to fraction form
    13,199.22/19,771.30 = 7,917.48/x
  3. Step 3: Cross multiply
    13,199.22x = 19,771.30 × 7,917.48
  4. Step 4: Simplify right side
    13,199.22x = 156,538,872.32
  5. Step 5: Solve for x
    x = 156,538,872.32/13,199.22
  6. Step 6: Final answer
    x = 11,859.71

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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.