Home / 14,381.28-21,571.20-3,993.12

Finding the Fourth Proportional to 14,381.28, 21,571.20 and 3,993.12

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Solution

The fourth proportional to 14,381.28, 21,571.20 and 3,993.12 is: 5,989.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,381.28 : 21,571.20 = 3,993.12 : x
  2. Step 2: Convert to fraction form
    14,381.28/21,571.20 = 3,993.12/x
  3. Step 3: Cross multiply
    14,381.28x = 21,571.20 × 3,993.12
  4. Step 4: Simplify right side
    14,381.28x = 86,136,390.14
  5. Step 5: Solve for x
    x = 86,136,390.14/14,381.28
  6. Step 6: Final answer
    x = 5,989.48

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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.