Home / 22,121.40-33,182.10-21,991.80

Finding the Fourth Proportional to 22,121.40, 33,182.10 and 21,991.80

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Solution

The fourth proportional to 22,121.40, 33,182.10 and 21,991.80 is: 32,987.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,121.40 : 33,182.10 = 21,991.80 : x
  2. Step 2: Convert to fraction form
    22,121.40/33,182.10 = 21,991.80/x
  3. Step 3: Cross multiply
    22,121.40x = 33,182.10 × 21,991.80
  4. Step 4: Simplify right side
    22,121.40x = 729,734,106.78
  5. Step 5: Solve for x
    x = 729,734,106.78/22,121.40
  6. Step 6: Final answer
    x = 32,987.70

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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.