Home / 21,251.22-31,879.35-5,668.98

Finding the Fourth Proportional to 21,251.22, 31,879.35 and 5,668.98

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Solution

The fourth proportional to 21,251.22, 31,879.35 and 5,668.98 is: 8,504.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,251.22 : 31,879.35 = 5,668.98 : x
  2. Step 2: Convert to fraction form
    21,251.22/31,879.35 = 5,668.98/x
  3. Step 3: Cross multiply
    21,251.22x = 31,879.35 × 5,668.98
  4. Step 4: Simplify right side
    21,251.22x = 180,723,397.56
  5. Step 5: Solve for x
    x = 180,723,397.56/21,251.22
  6. Step 6: Final answer
    x = 8,504.14

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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.