Home / 18,533.64-27,806.98-12,318.33

Finding the Fourth Proportional to 18,533.64, 27,806.98 and 12,318.33

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Solution

The fourth proportional to 18,533.64, 27,806.98 and 12,318.33 is: 18,481.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,533.64 : 27,806.98 = 12,318.33 : x
  2. Step 2: Convert to fraction form
    18,533.64/27,806.98 = 12,318.33/x
  3. Step 3: Cross multiply
    18,533.64x = 27,806.98 × 12,318.33
  4. Step 4: Simplify right side
    18,533.64x = 342,535,416.91
  5. Step 5: Solve for x
    x = 342,535,416.91/18,533.64
  6. Step 6: Final answer
    x = 18,481.83

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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.