Home / 12,080.55-18,115.08-4,479.36

Finding the Fourth Proportional to 12,080.55, 18,115.08 and 4,479.36

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Solution

The fourth proportional to 12,080.55, 18,115.08 and 4,479.36 is: 6,716.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,080.55 : 18,115.08 = 4,479.36 : x
  2. Step 2: Convert to fraction form
    12,080.55/18,115.08 = 4,479.36/x
  3. Step 3: Cross multiply
    12,080.55x = 18,115.08 × 4,479.36
  4. Step 4: Simplify right side
    12,080.55x = 81,143,964.75
  5. Step 5: Solve for x
    x = 81,143,964.75/12,080.55
  6. Step 6: Final answer
    x = 6,716.91

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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.