Home / 21,163.72-31,748.82-5,582.56

Finding the Fourth Proportional to 21,163.72, 31,748.82 and 5,582.56

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Solution

The fourth proportional to 21,163.72, 31,748.82 and 5,582.56 is: 8,374.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.72 : 31,748.82 = 5,582.56 : x
  2. Step 2: Convert to fraction form
    21,163.72/31,748.82 = 5,582.56/x
  3. Step 3: Cross multiply
    21,163.72x = 31,748.82 × 5,582.56
  4. Step 4: Simplify right side
    21,163.72x = 177,239,692.58
  5. Step 5: Solve for x
    x = 177,239,692.58/21,163.72
  6. Step 6: Final answer
    x = 8,374.69

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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.