Home / 14,242.72-21,367.20-5,481.76

Finding the Fourth Proportional to 14,242.72, 21,367.20 and 5,481.76

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Solution

The fourth proportional to 14,242.72, 21,367.20 and 5,481.76 is: 8,223.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,242.72 : 21,367.20 = 5,481.76 : x
  2. Step 2: Convert to fraction form
    14,242.72/21,367.20 = 5,481.76/x
  3. Step 3: Cross multiply
    14,242.72x = 21,367.20 × 5,481.76
  4. Step 4: Simplify right side
    14,242.72x = 117,129,862.27
  5. Step 5: Solve for x
    x = 117,129,862.27/14,242.72
  6. Step 6: Final answer
    x = 8,223.84

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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.