Home / 13,436.56-20,198.40-8,275.12

Finding the Fourth Proportional to 13,436.56, 20,198.40 and 8,275.12

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Solution

The fourth proportional to 13,436.56, 20,198.40 and 8,275.12 is: 12,439.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,436.56 : 20,198.40 = 8,275.12 : x
  2. Step 2: Convert to fraction form
    13,436.56/20,198.40 = 8,275.12/x
  3. Step 3: Cross multiply
    13,436.56x = 20,198.40 × 8,275.12
  4. Step 4: Simplify right side
    13,436.56x = 167,144,183.81
  5. Step 5: Solve for x
    x = 167,144,183.81/13,436.56
  6. Step 6: Final answer
    x = 12,439.51

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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.