Home / 21,324.21-31,944.74-12,983.54

Finding the Fourth Proportional to 21,324.21, 31,944.74 and 12,983.54

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Solution

The fourth proportional to 21,324.21, 31,944.74 and 12,983.54 is: 19,449.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,324.21 : 31,944.74 = 12,983.54 : x
  2. Step 2: Convert to fraction form
    21,324.21/31,944.74 = 12,983.54/x
  3. Step 3: Cross multiply
    21,324.21x = 31,944.74 × 12,983.54
  4. Step 4: Simplify right side
    21,324.21x = 414,755,584.94
  5. Step 5: Solve for x
    x = 414,755,584.94/21,324.21
  6. Step 6: Final answer
    x = 19,449.99

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1.5x scale

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.