Home / 15,443.31-21,311.87-8,369.79

Finding the Fourth Proportional to 15,443.31, 21,311.87 and 8,369.79

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Solution

The fourth proportional to 15,443.31, 21,311.87 and 8,369.79 is: 11,550.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,443.31 : 21,311.87 = 8,369.79 : x
  2. Step 2: Convert to fraction form
    15,443.31/21,311.87 = 8,369.79/x
  3. Step 3: Cross multiply
    15,443.31x = 21,311.87 × 8,369.79
  4. Step 4: Simplify right side
    15,443.31x = 178,375,876.41
  5. Step 5: Solve for x
    x = 178,375,876.41/15,443.31
  6. Step 6: Final answer
    x = 11,550.37

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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.