Home / 12,190.23-18,276.53-8,231.67

Finding the Fourth Proportional to 12,190.23, 18,276.53 and 8,231.67

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Solution

The fourth proportional to 12,190.23, 18,276.53 and 8,231.67 is: 12,341.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.23 : 18,276.53 = 8,231.67 : x
  2. Step 2: Convert to fraction form
    12,190.23/18,276.53 = 8,231.67/x
  3. Step 3: Cross multiply
    12,190.23x = 18,276.53 × 8,231.67
  4. Step 4: Simplify right side
    12,190.23x = 150,446,322.55
  5. Step 5: Solve for x
    x = 150,446,322.55/12,190.23
  6. Step 6: Final answer
    x = 12,341.55

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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.