Home / 13,687.94-18,766.21-13,438.82

Finding the Fourth Proportional to 13,687.94, 18,766.21 and 13,438.82

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Solution

The fourth proportional to 13,687.94, 18,766.21 and 13,438.82 is: 18,424.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,687.94 : 18,766.21 = 13,438.82 : x
  2. Step 2: Convert to fraction form
    13,687.94/18,766.21 = 13,438.82/x
  3. Step 3: Cross multiply
    13,687.94x = 18,766.21 × 13,438.82
  4. Step 4: Simplify right side
    13,687.94x = 252,195,651.08
  5. Step 5: Solve for x
    x = 252,195,651.08/13,687.94
  6. Step 6: Final answer
    x = 18,424.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.