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Finding the Fourth Proportional to 18,241.60, 27,379.45 and 11,235.28

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Solution

The fourth proportional to 18,241.60, 27,379.45 and 11,235.28 is: 16,863.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,241.60 : 27,379.45 = 11,235.28 : x
  2. Step 2: Convert to fraction form
    18,241.60/27,379.45 = 11,235.28/x
  3. Step 3: Cross multiply
    18,241.60x = 27,379.45 × 11,235.28
  4. Step 4: Simplify right side
    18,241.60x = 307,615,593.92
  5. Step 5: Solve for x
    x = 307,615,593.92/18,241.60
  6. Step 6: Final answer
    x = 16,863.41

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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.