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Finding the Fourth Proportional to 12,525.44, 18,785.72 and 8,076.11

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Solution

The fourth proportional to 12,525.44, 18,785.72 and 8,076.11 is: 12,112.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,525.44 : 18,785.72 = 8,076.11 : x
  2. Step 2: Convert to fraction form
    12,525.44/18,785.72 = 8,076.11/x
  3. Step 3: Cross multiply
    12,525.44x = 18,785.72 × 8,076.11
  4. Step 4: Simplify right side
    12,525.44x = 151,715,467.41
  5. Step 5: Solve for x
    x = 151,715,467.41/12,525.44
  6. Step 6: Final answer
    x = 12,112.59

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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.