Home / 13,255.66-18,286.68-8,474.34

Finding the Fourth Proportional to 13,255.66, 18,286.68 and 8,474.34

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Solution

The fourth proportional to 13,255.66, 18,286.68 and 8,474.34 is: 11,690.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,255.66 : 18,286.68 = 8,474.34 : x
  2. Step 2: Convert to fraction form
    13,255.66/18,286.68 = 8,474.34/x
  3. Step 3: Cross multiply
    13,255.66x = 18,286.68 × 8,474.34
  4. Step 4: Simplify right side
    13,255.66x = 154,967,543.79
  5. Step 5: Solve for x
    x = 154,967,543.79/13,255.66
  6. Step 6: Final answer
    x = 11,690.67

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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.