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Finding the Fourth Proportional to 18,485.92, 27,721.79 and 14,544.92

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Solution

The fourth proportional to 18,485.92, 27,721.79 and 14,544.92 is: 21,811.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,485.92 : 27,721.79 = 14,544.92 : x
  2. Step 2: Convert to fraction form
    18,485.92/27,721.79 = 14,544.92/x
  3. Step 3: Cross multiply
    18,485.92x = 27,721.79 × 14,544.92
  4. Step 4: Simplify right side
    18,485.92x = 403,211,194.81
  5. Step 5: Solve for x
    x = 403,211,194.81/18,485.92
  6. Step 6: Final answer
    x = 21,811.80

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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.