Home / 12,391.79-18,589.50-3,625.56

Finding the Fourth Proportional to 12,391.79, 18,589.50 and 3,625.56

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Solution

The fourth proportional to 12,391.79, 18,589.50 and 3,625.56 is: 5,438.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391.79 : 18,589.50 = 3,625.56 : x
  2. Step 2: Convert to fraction form
    12,391.79/18,589.50 = 3,625.56/x
  3. Step 3: Cross multiply
    12,391.79x = 18,589.50 × 3,625.56
  4. Step 4: Simplify right side
    12,391.79x = 67,397,347.62
  5. Step 5: Solve for x
    x = 67,397,347.62/12,391.79
  6. Step 6: Final answer
    x = 5,438.87

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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.