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Finding the Fourth Proportional to 18,328.00, 27,499.79 and 12,411.56

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Solution

The fourth proportional to 18,328.00, 27,499.79 and 12,411.56 is: 18,622.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,328.00 : 27,499.79 = 12,411.56 : x
  2. Step 2: Convert to fraction form
    18,328.00/27,499.79 = 12,411.56/x
  3. Step 3: Cross multiply
    18,328.00x = 27,499.79 × 12,411.56
  4. Step 4: Simplify right side
    18,328.00x = 341,315,187.10
  5. Step 5: Solve for x
    x = 341,315,187.10/18,328.00
  6. Step 6: Final answer
    x = 18,622.61

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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.