Home / 20,145.12-30,183.56-12,337.62

Finding the Fourth Proportional to 20,145.12, 30,183.56 and 12,337.62

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Solution

The fourth proportional to 20,145.12, 30,183.56 and 12,337.62 is: 18,485.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.12 : 30,183.56 = 12,337.62 : x
  2. Step 2: Convert to fraction form
    20,145.12/30,183.56 = 12,337.62/x
  3. Step 3: Cross multiply
    20,145.12x = 30,183.56 × 12,337.62
  4. Step 4: Simplify right side
    20,145.12x = 372,393,293.53
  5. Step 5: Solve for x
    x = 372,393,293.53/20,145.12
  6. Step 6: Final answer
    x = 18,485.53

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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.