Home / 21,144.28-29,178.90-11,584.24

Finding the Fourth Proportional to 21,144.28, 29,178.90 and 11,584.24

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Solution

The fourth proportional to 21,144.28, 29,178.90 and 11,584.24 is: 15,986.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,144.28 : 29,178.90 = 11,584.24 : x
  2. Step 2: Convert to fraction form
    21,144.28/29,178.90 = 11,584.24/x
  3. Step 3: Cross multiply
    21,144.28x = 29,178.90 × 11,584.24
  4. Step 4: Simplify right side
    21,144.28x = 338,015,380.54
  5. Step 5: Solve for x
    x = 338,015,380.54/21,144.28
  6. Step 6: Final answer
    x = 15,986.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.