Home / 12,399.58-18,602.16-4,080.44

Finding the Fourth Proportional to 12,399.58, 18,602.16 and 4,080.44

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Solution

The fourth proportional to 12,399.58, 18,602.16 and 4,080.44 is: 6,121.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,399.58 : 18,602.16 = 4,080.44 : x
  2. Step 2: Convert to fraction form
    12,399.58/18,602.16 = 4,080.44/x
  3. Step 3: Cross multiply
    12,399.58x = 18,602.16 × 4,080.44
  4. Step 4: Simplify right side
    12,399.58x = 75,904,997.75
  5. Step 5: Solve for x
    x = 75,904,997.75/12,399.58
  6. Step 6: Final answer
    x = 6,121.58

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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.