Home / 21,183.10-31,753.99-10,086.81

Finding the Fourth Proportional to 21,183.10, 31,753.99 and 10,086.81

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Solution

The fourth proportional to 21,183.10, 31,753.99 and 10,086.81 is: 15,120.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,183.10 : 31,753.99 = 10,086.81 : x
  2. Step 2: Convert to fraction form
    21,183.10/31,753.99 = 10,086.81/x
  3. Step 3: Cross multiply
    21,183.10x = 31,753.99 × 10,086.81
  4. Step 4: Simplify right side
    21,183.10x = 320,296,463.87
  5. Step 5: Solve for x
    x = 320,296,463.87/21,183.10
  6. Step 6: Final answer
    x = 15,120.38

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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.