Home / 21,247.82-31,874.68-9,400.66

Finding the Fourth Proportional to 21,247.82, 31,874.68 and 9,400.66

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Solution

The fourth proportional to 21,247.82, 31,874.68 and 9,400.66 is: 14,102.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,247.82 : 31,874.68 = 9,400.66 : x
  2. Step 2: Convert to fraction form
    21,247.82/31,874.68 = 9,400.66/x
  3. Step 3: Cross multiply
    21,247.82x = 31,874.68 × 9,400.66
  4. Step 4: Simplify right side
    21,247.82x = 299,642,961.35
  5. Step 5: Solve for x
    x = 299,642,961.35/21,247.82
  6. Step 6: Final answer
    x = 14,102.29

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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.