Home / 13,418.42-18,517.26-7,449.86

Finding the Fourth Proportional to 13,418.42, 18,517.26 and 7,449.86

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Solution

The fourth proportional to 13,418.42, 18,517.26 and 7,449.86 is: 10,280.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,418.42 : 18,517.26 = 7,449.86 : x
  2. Step 2: Convert to fraction form
    13,418.42/18,517.26 = 7,449.86/x
  3. Step 3: Cross multiply
    13,418.42x = 18,517.26 × 7,449.86
  4. Step 4: Simplify right side
    13,418.42x = 137,950,994.58
  5. Step 5: Solve for x
    x = 137,950,994.58/13,418.42
  6. Step 6: Final answer
    x = 10,280.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.