Home / 21,936.11-30,269.97-12,982.03

Finding the Fourth Proportional to 21,936.11, 30,269.97 and 12,982.03

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Solution

The fourth proportional to 21,936.11, 30,269.97 and 12,982.03 is: 17,914.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,936.11 : 30,269.97 = 12,982.03 : x
  2. Step 2: Convert to fraction form
    21,936.11/30,269.97 = 12,982.03/x
  3. Step 3: Cross multiply
    21,936.11x = 30,269.97 × 12,982.03
  4. Step 4: Simplify right side
    21,936.11x = 392,965,582.96
  5. Step 5: Solve for x
    x = 392,965,582.96/21,936.11
  6. Step 6: Final answer
    x = 17,914.10

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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.