Home / 21,321.92-29,424.03-11,761.76

Finding the Fourth Proportional to 21,321.92, 29,424.03 and 11,761.76

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Solution

The fourth proportional to 21,321.92, 29,424.03 and 11,761.76 is: 16,231.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,321.92 : 29,424.03 = 11,761.76 : x
  2. Step 2: Convert to fraction form
    21,321.92/29,424.03 = 11,761.76/x
  3. Step 3: Cross multiply
    21,321.92x = 29,424.03 × 11,761.76
  4. Step 4: Simplify right side
    21,321.92x = 346,078,379.09
  5. Step 5: Solve for x
    x = 346,078,379.09/21,321.92
  6. Step 6: Final answer
    x = 16,231.11

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1.5x scale

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.