Home / 12,121.41-18,181.58-3,801.24

Finding the Fourth Proportional to 12,121.41, 18,181.58 and 3,801.24

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Solution

The fourth proportional to 12,121.41, 18,181.58 and 3,801.24 is: 5,701.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.41 : 18,181.58 = 3,801.24 : x
  2. Step 2: Convert to fraction form
    12,121.41/18,181.58 = 3,801.24/x
  3. Step 3: Cross multiply
    12,121.41x = 18,181.58 × 3,801.24
  4. Step 4: Simplify right side
    12,121.41x = 69,112,558.66
  5. Step 5: Solve for x
    x = 69,112,558.66/12,121.41
  6. Step 6: Final answer
    x = 5,701.69

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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.