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Finding the Fourth Proportional to 18,410.22, 25,409.03 and 11,241.72

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Solution

The fourth proportional to 18,410.22, 25,409.03 and 11,241.72 is: 15,515.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,410.22 : 25,409.03 = 11,241.72 : x
  2. Step 2: Convert to fraction form
    18,410.22/25,409.03 = 11,241.72/x
  3. Step 3: Cross multiply
    18,410.22x = 25,409.03 × 11,241.72
  4. Step 4: Simplify right side
    18,410.22x = 285,641,144.52
  5. Step 5: Solve for x
    x = 285,641,144.52/18,410.22
  6. Step 6: Final answer
    x = 15,515.36

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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.