Home / 20,142.94-30,183.34-10,784.20

Finding the Fourth Proportional to 20,142.94, 30,183.34 and 10,784.20

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Solution

The fourth proportional to 20,142.94, 30,183.34 and 10,784.20 is: 16,159.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142.94 : 30,183.34 = 10,784.20 : x
  2. Step 2: Convert to fraction form
    20,142.94/30,183.34 = 10,784.20/x
  3. Step 3: Cross multiply
    20,142.94x = 30,183.34 × 10,784.20
  4. Step 4: Simplify right side
    20,142.94x = 325,503,175.23
  5. Step 5: Solve for x
    x = 325,503,175.23/20,142.94
  6. Step 6: Final answer
    x = 16,159.67

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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.