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Finding the Fourth Proportional to 18,196.20, 25,111.44 and 11,028.42

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Solution

The fourth proportional to 18,196.20, 25,111.44 and 11,028.42 is: 15,219.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,196.20 : 25,111.44 = 11,028.42 : x
  2. Step 2: Convert to fraction form
    18,196.20/25,111.44 = 11,028.42/x
  3. Step 3: Cross multiply
    18,196.20x = 25,111.44 × 11,028.42
  4. Step 4: Simplify right side
    18,196.20x = 276,939,507.12
  5. Step 5: Solve for x
    x = 276,939,507.12/18,196.20
  6. Step 6: Final answer
    x = 15,219.63

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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.