Home / 12,212.25-18,318.39-4,419.24

Finding the Fourth Proportional to 12,212.25, 18,318.39 and 4,419.24

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Solution

The fourth proportional to 12,212.25, 18,318.39 and 4,419.24 is: 6,628.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212.25 : 18,318.39 = 4,419.24 : x
  2. Step 2: Convert to fraction form
    12,212.25/18,318.39 = 4,419.24/x
  3. Step 3: Cross multiply
    12,212.25x = 18,318.39 × 4,419.24
  4. Step 4: Simplify right side
    12,212.25x = 80,953,361.82
  5. Step 5: Solve for x
    x = 80,953,361.82/12,212.25
  6. Step 6: Final answer
    x = 6,628.87

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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.