Home / 20,836.08-31,241.79-8,361.99

Finding the Fourth Proportional to 20,836.08, 31,241.79 and 8,361.99

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Solution

The fourth proportional to 20,836.08, 31,241.79 and 8,361.99 is: 12,538.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,836.08 : 31,241.79 = 8,361.99 : x
  2. Step 2: Convert to fraction form
    20,836.08/31,241.79 = 8,361.99/x
  3. Step 3: Cross multiply
    20,836.08x = 31,241.79 × 8,361.99
  4. Step 4: Simplify right side
    20,836.08x = 261,243,535.56
  5. Step 5: Solve for x
    x = 261,243,535.56/20,836.08
  6. Step 6: Final answer
    x = 12,538.04

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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.