Home / 20,119.40-30,183.90-10,260.20

Finding the Fourth Proportional to 20,119.40, 30,183.90 and 10,260.20

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Solution

The fourth proportional to 20,119.40, 30,183.90 and 10,260.20 is: 15,392.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,119.40 : 30,183.90 = 10,260.20 : x
  2. Step 2: Convert to fraction form
    20,119.40/30,183.90 = 10,260.20/x
  3. Step 3: Cross multiply
    20,119.40x = 30,183.90 × 10,260.20
  4. Step 4: Simplify right side
    20,119.40x = 309,692,850.78
  5. Step 5: Solve for x
    x = 309,692,850.78/20,119.40
  6. Step 6: Final answer
    x = 15,392.75

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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.