Home / 18,866.11-28,297.53-6,385.86

Finding the Fourth Proportional to 18,866.11, 28,297.53 and 6,385.86

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Solution

The fourth proportional to 18,866.11, 28,297.53 and 6,385.86 is: 9,578.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,866.11 : 28,297.53 = 6,385.86 : x
  2. Step 2: Convert to fraction form
    18,866.11/28,297.53 = 6,385.86/x
  3. Step 3: Cross multiply
    18,866.11x = 28,297.53 × 6,385.86
  4. Step 4: Simplify right side
    18,866.11x = 180,703,923.44
  5. Step 5: Solve for x
    x = 180,703,923.44/18,866.11
  6. Step 6: Final answer
    x = 9,578.23

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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.