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Finding the Fourth Proportional to 38,467.60, 57,609.60 and 18,682.60

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Solution

The fourth proportional to 38,467.60, 57,609.60 and 18,682.60 is: 27,979.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,467.60 : 57,609.60 = 18,682.60 : x
  2. Step 2: Convert to fraction form
    38,467.60/57,609.60 = 18,682.60/x
  3. Step 3: Cross multiply
    38,467.60x = 57,609.60 × 18,682.60
  4. Step 4: Simplify right side
    38,467.60x = 1,076,297,112.96
  5. Step 5: Solve for x
    x = 1,076,297,112.96/38,467.60
  6. Step 6: Final answer
    x = 27,979.32

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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.