Home / 21,361.68-32,006.88-18,912.24

Finding the Fourth Proportional to 21,361.68, 32,006.88 and 18,912.24

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Solution

The fourth proportional to 21,361.68, 32,006.88 and 18,912.24 is: 28,336.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,361.68 : 32,006.88 = 18,912.24 : x
  2. Step 2: Convert to fraction form
    21,361.68/32,006.88 = 18,912.24/x
  3. Step 3: Cross multiply
    21,361.68x = 32,006.88 × 18,912.24
  4. Step 4: Simplify right side
    21,361.68x = 605,321,796.21
  5. Step 5: Solve for x
    x = 605,321,796.21/21,361.68
  6. Step 6: Final answer
    x = 28,336.81

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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.