Home / 13,453.89-18,558.78-8,074.95

Finding the Fourth Proportional to 13,453.89, 18,558.78 and 8,074.95

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Solution

The fourth proportional to 13,453.89, 18,558.78 and 8,074.95 is: 11,138.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,453.89 : 18,558.78 = 8,074.95 : x
  2. Step 2: Convert to fraction form
    13,453.89/18,558.78 = 8,074.95/x
  3. Step 3: Cross multiply
    13,453.89x = 18,558.78 × 8,074.95
  4. Step 4: Simplify right side
    13,453.89x = 149,861,220.56
  5. Step 5: Solve for x
    x = 149,861,220.56/13,453.89
  6. Step 6: Final answer
    x = 11,138.88

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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.