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Finding the Fourth Proportional to 19,252.80, 28,884.60 and 8,164.80

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Solution

The fourth proportional to 19,252.80, 28,884.60 and 8,164.80 is: 12,249.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,252.80 : 28,884.60 = 8,164.80 : x
  2. Step 2: Convert to fraction form
    19,252.80/28,884.60 = 8,164.80/x
  3. Step 3: Cross multiply
    19,252.80x = 28,884.60 × 8,164.80
  4. Step 4: Simplify right side
    19,252.80x = 235,836,982.08
  5. Step 5: Solve for x
    x = 235,836,982.08/19,252.80
  6. Step 6: Final answer
    x = 12,249.49

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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.