Home / 20,183.10-30,274.65-12,309.90

Finding the Fourth Proportional to 20,183.10, 30,274.65 and 12,309.90

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Solution

The fourth proportional to 20,183.10, 30,274.65 and 12,309.90 is: 18,464.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,183.10 : 30,274.65 = 12,309.90 : x
  2. Step 2: Convert to fraction form
    20,183.10/30,274.65 = 12,309.90/x
  3. Step 3: Cross multiply
    20,183.10x = 30,274.65 × 12,309.90
  4. Step 4: Simplify right side
    20,183.10x = 372,677,914.04
  5. Step 5: Solve for x
    x = 372,677,914.04/20,183.10
  6. Step 6: Final answer
    x = 18,464.85

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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.