Home / 20,936.70-31,372.22-17,803.82

Finding the Fourth Proportional to 20,936.70, 31,372.22 and 17,803.82

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Solution

The fourth proportional to 20,936.70, 31,372.22 and 17,803.82 is: 26,677.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,936.70 : 31,372.22 = 17,803.82 : x
  2. Step 2: Convert to fraction form
    20,936.70/31,372.22 = 17,803.82/x
  3. Step 3: Cross multiply
    20,936.70x = 31,372.22 × 17,803.82
  4. Step 4: Simplify right side
    20,936.70x = 558,545,357.88
  5. Step 5: Solve for x
    x = 558,545,357.88/20,936.70
  6. Step 6: Final answer
    x = 26,677.81

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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.