Home / 13,121.94-19,682.55-3,261.12

Finding the Fourth Proportional to 13,121.94, 19,682.55 and 3,261.12

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Solution

The fourth proportional to 13,121.94, 19,682.55 and 3,261.12 is: 4,891.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121.94 : 19,682.55 = 3,261.12 : x
  2. Step 2: Convert to fraction form
    13,121.94/19,682.55 = 3,261.12/x
  3. Step 3: Cross multiply
    13,121.94x = 19,682.55 × 3,261.12
  4. Step 4: Simplify right side
    13,121.94x = 64,187,157.46
  5. Step 5: Solve for x
    x = 64,187,157.46/13,121.94
  6. Step 6: Final answer
    x = 4,891.59

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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.