Home / 11,922.66-17,883.85-4,905.90

Finding the Fourth Proportional to 11,922.66, 17,883.85 and 4,905.90

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Solution

The fourth proportional to 11,922.66, 17,883.85 and 4,905.90 is: 7,358.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,922.66 : 17,883.85 = 4,905.90 : x
  2. Step 2: Convert to fraction form
    11,922.66/17,883.85 = 4,905.90/x
  3. Step 3: Cross multiply
    11,922.66x = 17,883.85 × 4,905.90
  4. Step 4: Simplify right side
    11,922.66x = 87,736,379.72
  5. Step 5: Solve for x
    x = 87,736,379.72/11,922.66
  6. Step 6: Final answer
    x = 7,358.79

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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.