Home / 20,928.11-31,396.82-6,136.43

Finding the Fourth Proportional to 20,928.11, 31,396.82 and 6,136.43

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Solution

The fourth proportional to 20,928.11, 31,396.82 and 6,136.43 is: 9,206.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,928.11 : 31,396.82 = 6,136.43 : x
  2. Step 2: Convert to fraction form
    20,928.11/31,396.82 = 6,136.43/x
  3. Step 3: Cross multiply
    20,928.11x = 31,396.82 × 6,136.43
  4. Step 4: Simplify right side
    20,928.11x = 192,664,200.49
  5. Step 5: Solve for x
    x = 192,664,200.49/20,928.11
  6. Step 6: Final answer
    x = 9,206.00

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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.