Home / 21,825.44-30,119.11-11,889.44

Finding the Fourth Proportional to 21,825.44, 30,119.11 and 11,889.44

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Solution

The fourth proportional to 21,825.44, 30,119.11 and 11,889.44 is: 16,407.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,825.44 : 30,119.11 = 11,889.44 : x
  2. Step 2: Convert to fraction form
    21,825.44/30,119.11 = 11,889.44/x
  3. Step 3: Cross multiply
    21,825.44x = 30,119.11 × 11,889.44
  4. Step 4: Simplify right side
    21,825.44x = 358,099,291.75
  5. Step 5: Solve for x
    x = 358,099,291.75/21,825.44
  6. Step 6: Final answer
    x = 16,407.43

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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.