Home / 21,093.64-31,697.94-11,239.96

Finding the Fourth Proportional to 21,093.64, 31,697.94 and 11,239.96

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Solution

The fourth proportional to 21,093.64, 31,697.94 and 11,239.96 is: 16,890.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,093.64 : 31,697.94 = 11,239.96 : x
  2. Step 2: Convert to fraction form
    21,093.64/31,697.94 = 11,239.96/x
  3. Step 3: Cross multiply
    21,093.64x = 31,697.94 × 11,239.96
  4. Step 4: Simplify right side
    21,093.64x = 356,283,577.68
  5. Step 5: Solve for x
    x = 356,283,577.68/21,093.64
  6. Step 6: Final answer
    x = 16,890.57

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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.