Home / 11,239.83-16,854.36-5,311.79

Finding the Fourth Proportional to 11,239.83, 16,854.36 and 5,311.79

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Solution

The fourth proportional to 11,239.83, 16,854.36 and 5,311.79 is: 7,965.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,239.83 : 16,854.36 = 5,311.79 : x
  2. Step 2: Convert to fraction form
    11,239.83/16,854.36 = 5,311.79/x
  3. Step 3: Cross multiply
    11,239.83x = 16,854.36 × 5,311.79
  4. Step 4: Simplify right side
    11,239.83x = 89,526,736.63
  5. Step 5: Solve for x
    x = 89,526,736.63/11,239.83
  6. Step 6: Final answer
    x = 7,965.13

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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.