Home / 20,731.62-31,101.86-6,692.44

Finding the Fourth Proportional to 20,731.62, 31,101.86 and 6,692.44

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Solution

The fourth proportional to 20,731.62, 31,101.86 and 6,692.44 is: 10,040.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,731.62 : 31,101.86 = 6,692.44 : x
  2. Step 2: Convert to fraction form
    20,731.62/31,101.86 = 6,692.44/x
  3. Step 3: Cross multiply
    20,731.62x = 31,101.86 × 6,692.44
  4. Step 4: Simplify right side
    20,731.62x = 208,147,331.94
  5. Step 5: Solve for x
    x = 208,147,331.94/20,731.62
  6. Step 6: Final answer
    x = 10,040.09

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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.