Home / 21,183.14-31,735.98-9,917.81

Finding the Fourth Proportional to 21,183.14, 31,735.98 and 9,917.81

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Solution

The fourth proportional to 21,183.14, 31,735.98 and 9,917.81 is: 14,858.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,183.14 : 31,735.98 = 9,917.81 : x
  2. Step 2: Convert to fraction form
    21,183.14/31,735.98 = 9,917.81/x
  3. Step 3: Cross multiply
    21,183.14x = 31,735.98 × 9,917.81
  4. Step 4: Simplify right side
    21,183.14x = 314,751,352.24
  5. Step 5: Solve for x
    x = 314,751,352.24/21,183.14
  6. Step 6: Final answer
    x = 14,858.58

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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.