Home / 20,183.76-30,267.36-11,880.36

Finding the Fourth Proportional to 20,183.76, 30,267.36 and 11,880.36

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Solution

The fourth proportional to 20,183.76, 30,267.36 and 11,880.36 is: 17,815.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,183.76 : 30,267.36 = 11,880.36 : x
  2. Step 2: Convert to fraction form
    20,183.76/30,267.36 = 11,880.36/x
  3. Step 3: Cross multiply
    20,183.76x = 30,267.36 × 11,880.36
  4. Step 4: Simplify right side
    20,183.76x = 359,587,133.05
  5. Step 5: Solve for x
    x = 359,587,133.05/20,183.76
  6. Step 6: Final answer
    x = 17,815.67

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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.