Home / 30,105.20-45,183.40-13,490.80

Finding the Fourth Proportional to 30,105.20, 45,183.40 and 13,490.80

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Solution

The fourth proportional to 30,105.20, 45,183.40 and 13,490.80 is: 20,247.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,105.20 : 45,183.40 = 13,490.80 : x
  2. Step 2: Convert to fraction form
    30,105.20/45,183.40 = 13,490.80/x
  3. Step 3: Cross multiply
    30,105.20x = 45,183.40 × 13,490.80
  4. Step 4: Simplify right side
    30,105.20x = 609,560,212.72
  5. Step 5: Solve for x
    x = 609,560,212.72/30,105.20
  6. Step 6: Final answer
    x = 20,247.67

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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.