Home / 18,960.13-28,441.21-7,272.44

Finding the Fourth Proportional to 18,960.13, 28,441.21 and 7,272.44

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Solution

The fourth proportional to 18,960.13, 28,441.21 and 7,272.44 is: 10,909.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,960.13 : 28,441.21 = 7,272.44 : x
  2. Step 2: Convert to fraction form
    18,960.13/28,441.21 = 7,272.44/x
  3. Step 3: Cross multiply
    18,960.13x = 28,441.21 × 7,272.44
  4. Step 4: Simplify right side
    18,960.13x = 206,836,993.25
  5. Step 5: Solve for x
    x = 206,836,993.25/18,960.13
  6. Step 6: Final answer
    x = 10,909.05

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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.