Home / 12,453.96-18,679.26-3,689.80

Finding the Fourth Proportional to 12,453.96, 18,679.26 and 3,689.80

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Solution

The fourth proportional to 12,453.96, 18,679.26 and 3,689.80 is: 5,534.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,453.96 : 18,679.26 = 3,689.80 : x
  2. Step 2: Convert to fraction form
    12,453.96/18,679.26 = 3,689.80/x
  3. Step 3: Cross multiply
    12,453.96x = 18,679.26 × 3,689.80
  4. Step 4: Simplify right side
    12,453.96x = 68,922,733.55
  5. Step 5: Solve for x
    x = 68,922,733.55/12,453.96
  6. Step 6: Final answer
    x = 5,534.20

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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.