Home / 12,076.58-18,115.32-3,311.48

Finding the Fourth Proportional to 12,076.58, 18,115.32 and 3,311.48

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Solution

The fourth proportional to 12,076.58, 18,115.32 and 3,311.48 is: 4,967.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,076.58 : 18,115.32 = 3,311.48 : x
  2. Step 2: Convert to fraction form
    12,076.58/18,115.32 = 3,311.48/x
  3. Step 3: Cross multiply
    12,076.58x = 18,115.32 × 3,311.48
  4. Step 4: Simplify right side
    12,076.58x = 59,988,519.87
  5. Step 5: Solve for x
    x = 59,988,519.87/12,076.58
  6. Step 6: Final answer
    x = 4,967.34

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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.