Home / 20,169.36-30,234.28-9,078.84

Finding the Fourth Proportional to 20,169.36, 30,234.28 and 9,078.84

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Solution

The fourth proportional to 20,169.36, 30,234.28 and 9,078.84 is: 13,609.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,169.36 : 30,234.28 = 9,078.84 : x
  2. Step 2: Convert to fraction form
    20,169.36/30,234.28 = 9,078.84/x
  3. Step 3: Cross multiply
    20,169.36x = 30,234.28 × 9,078.84
  4. Step 4: Simplify right side
    20,169.36x = 274,492,190.64
  5. Step 5: Solve for x
    x = 274,492,190.64/20,169.36
  6. Step 6: Final answer
    x = 13,609.37

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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.