Home / 12,120.80-18,181.22-3,801.03

Finding the Fourth Proportional to 12,120.80, 18,181.22 and 3,801.03

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Solution

The fourth proportional to 12,120.80, 18,181.22 and 3,801.03 is: 5,701.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,120.80 : 18,181.22 = 3,801.03 : x
  2. Step 2: Convert to fraction form
    12,120.80/18,181.22 = 3,801.03/x
  3. Step 3: Cross multiply
    12,120.80x = 18,181.22 × 3,801.03
  4. Step 4: Simplify right side
    12,120.80x = 69,107,343.65
  5. Step 5: Solve for x
    x = 69,107,343.65/12,120.80
  6. Step 6: Final answer
    x = 5,701.55

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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.