Home / 12,241.28-18,361.44-3,921.74

Finding the Fourth Proportional to 12,241.28, 18,361.44 and 3,921.74

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Solution

The fourth proportional to 12,241.28, 18,361.44 and 3,921.74 is: 5,882.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,241.28 : 18,361.44 = 3,921.74 : x
  2. Step 2: Convert to fraction form
    12,241.28/18,361.44 = 3,921.74/x
  3. Step 3: Cross multiply
    12,241.28x = 18,361.44 × 3,921.74
  4. Step 4: Simplify right side
    12,241.28x = 72,008,793.71
  5. Step 5: Solve for x
    x = 72,008,793.71/12,241.28
  6. Step 6: Final answer
    x = 5,882.46

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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.