Home / 13,183.78-18,197.86-8,711.50

Finding the Fourth Proportional to 13,183.78, 18,197.86 and 8,711.50

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Solution

The fourth proportional to 13,183.78, 18,197.86 and 8,711.50 is: 12,024.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,183.78 : 18,197.86 = 8,711.50 : x
  2. Step 2: Convert to fraction form
    13,183.78/18,197.86 = 8,711.50/x
  3. Step 3: Cross multiply
    13,183.78x = 18,197.86 × 8,711.50
  4. Step 4: Simplify right side
    13,183.78x = 158,530,657.39
  5. Step 5: Solve for x
    x = 158,530,657.39/13,183.78
  6. Step 6: Final answer
    x = 12,024.67

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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.