Home / 22,680.36-33,991.20-12,139.20

Finding the Fourth Proportional to 22,680.36, 33,991.20 and 12,139.20

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Solution

The fourth proportional to 22,680.36, 33,991.20 and 12,139.20 is: 18,193.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,680.36 : 33,991.20 = 12,139.20 : x
  2. Step 2: Convert to fraction form
    22,680.36/33,991.20 = 12,139.20/x
  3. Step 3: Cross multiply
    22,680.36x = 33,991.20 × 12,139.20
  4. Step 4: Simplify right side
    22,680.36x = 412,625,975.04
  5. Step 5: Solve for x
    x = 412,625,975.04/22,680.36
  6. Step 6: Final answer
    x = 18,193.10

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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.