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Finding the Fourth Proportional to 18,483.96, 27,728.82 and 11,086.68

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Solution

The fourth proportional to 18,483.96, 27,728.82 and 11,086.68 is: 16,631.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,483.96 : 27,728.82 = 11,086.68 : x
  2. Step 2: Convert to fraction form
    18,483.96/27,728.82 = 11,086.68/x
  3. Step 3: Cross multiply
    18,483.96x = 27,728.82 × 11,086.68
  4. Step 4: Simplify right side
    18,483.96x = 307,420,554.12
  5. Step 5: Solve for x
    x = 307,420,554.12/18,483.96
  6. Step 6: Final answer
    x = 16,631.75

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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.