Home / 21,183.71-31,764.69-11,193.81

Finding the Fourth Proportional to 21,183.71, 31,764.69 and 11,193.81

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Solution

The fourth proportional to 21,183.71, 31,764.69 and 11,193.81 is: 16,784.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,183.71 : 31,764.69 = 11,193.81 : x
  2. Step 2: Convert to fraction form
    21,183.71/31,764.69 = 11,193.81/x
  3. Step 3: Cross multiply
    21,183.71x = 31,764.69 × 11,193.81
  4. Step 4: Simplify right side
    21,183.71x = 355,567,904.57
  5. Step 5: Solve for x
    x = 355,567,904.57/21,183.71
  6. Step 6: Final answer
    x = 16,784.97

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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.