Home / 21,982.14-30,335.36-11,910.87

Finding the Fourth Proportional to 21,982.14, 30,335.36 and 11,910.87

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Solution

The fourth proportional to 21,982.14, 30,335.36 and 11,910.87 is: 16,437.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,982.14 : 30,335.36 = 11,910.87 : x
  2. Step 2: Convert to fraction form
    21,982.14/30,335.36 = 11,910.87/x
  3. Step 3: Cross multiply
    21,982.14x = 30,335.36 × 11,910.87
  4. Step 4: Simplify right side
    21,982.14x = 361,320,469.81
  5. Step 5: Solve for x
    x = 361,320,469.81/21,982.14
  6. Step 6: Final answer
    x = 16,437.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.