Home / 30,493.38-45,692.83-21,151.56

Finding the Fourth Proportional to 30,493.38, 45,692.83 and 21,151.56

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Solution

The fourth proportional to 30,493.38, 45,692.83 and 21,151.56 is: 31,694.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,493.38 : 45,692.83 = 21,151.56 : x
  2. Step 2: Convert to fraction form
    30,493.38/45,692.83 = 21,151.56/x
  3. Step 3: Cross multiply
    30,493.38x = 45,692.83 × 21,151.56
  4. Step 4: Simplify right side
    30,493.38x = 966,474,301.09
  5. Step 5: Solve for x
    x = 966,474,301.09/30,493.38
  6. Step 6: Final answer
    x = 31,694.57

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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.