Home / 14,231.97-21,351.42-6,438.69

Finding the Fourth Proportional to 14,231.97, 21,351.42 and 6,438.69

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Solution

The fourth proportional to 14,231.97, 21,351.42 and 6,438.69 is: 9,659.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,231.97 : 21,351.42 = 6,438.69 : x
  2. Step 2: Convert to fraction form
    14,231.97/21,351.42 = 6,438.69/x
  3. Step 3: Cross multiply
    14,231.97x = 21,351.42 × 6,438.69
  4. Step 4: Simplify right side
    14,231.97x = 137,475,174.44
  5. Step 5: Solve for x
    x = 137,475,174.44/14,231.97
  6. Step 6: Final answer
    x = 9,659.60

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1.5x scale

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.