Home / 21,982.16-30,335.53-11,910.68

Finding the Fourth Proportional to 21,982.16, 30,335.53 and 11,910.68

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Solution

The fourth proportional to 21,982.16, 30,335.53 and 11,910.68 is: 16,436.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,982.16 : 30,335.53 = 11,910.68 : x
  2. Step 2: Convert to fraction form
    21,982.16/30,335.53 = 11,910.68/x
  3. Step 3: Cross multiply
    21,982.16x = 30,335.53 × 11,910.68
  4. Step 4: Simplify right side
    21,982.16x = 361,316,694.85
  5. Step 5: Solve for x
    x = 361,316,694.85/21,982.16
  6. Step 6: Final answer
    x = 16,436.81

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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.