Home / 20,909.70-31,361.37-6,114.66

Finding the Fourth Proportional to 20,909.70, 31,361.37 and 6,114.66

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Solution

The fourth proportional to 20,909.70, 31,361.37 and 6,114.66 is: 9,171.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,909.70 : 31,361.37 = 6,114.66 : x
  2. Step 2: Convert to fraction form
    20,909.70/31,361.37 = 6,114.66/x
  3. Step 3: Cross multiply
    20,909.70x = 31,361.37 × 6,114.66
  4. Step 4: Simplify right side
    20,909.70x = 191,764,114.68
  5. Step 5: Solve for x
    x = 191,764,114.68/20,909.70
  6. Step 6: Final answer
    x = 9,171.06

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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.