Home / 20,161.20-30,184.20-18,087.60

Finding the Fourth Proportional to 20,161.20, 30,184.20 and 18,087.60

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Solution

The fourth proportional to 20,161.20, 30,184.20 and 18,087.60 is: 27,079.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,161.20 : 30,184.20 = 18,087.60 : x
  2. Step 2: Convert to fraction form
    20,161.20/30,184.20 = 18,087.60/x
  3. Step 3: Cross multiply
    20,161.20x = 30,184.20 × 18,087.60
  4. Step 4: Simplify right side
    20,161.20x = 545,959,735.92
  5. Step 5: Solve for x
    x = 545,959,735.92/20,161.20
  6. Step 6: Final answer
    x = 27,079.72

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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.