Home / 21,982.03-30,335.21-11,910.54

Finding the Fourth Proportional to 21,982.03, 30,335.21 and 11,910.54

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Solution

The fourth proportional to 21,982.03, 30,335.21 and 11,910.54 is: 16,436.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,982.03 : 30,335.21 = 11,910.54 : x
  2. Step 2: Convert to fraction form
    21,982.03/30,335.21 = 11,910.54/x
  3. Step 3: Cross multiply
    21,982.03x = 30,335.21 × 11,910.54
  4. Step 4: Simplify right side
    21,982.03x = 361,308,732.11
  5. Step 5: Solve for x
    x = 361,308,732.11/21,982.03
  6. Step 6: Final answer
    x = 16,436.55

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1.5x scale

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.