Home / 28,940.20-43,410.30-10,469.80

Finding the Fourth Proportional to 28,940.20, 43,410.30 and 10,469.80

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Solution

The fourth proportional to 28,940.20, 43,410.30 and 10,469.80 is: 15,704.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,940.20 : 43,410.30 = 10,469.80 : x
  2. Step 2: Convert to fraction form
    28,940.20/43,410.30 = 10,469.80/x
  3. Step 3: Cross multiply
    28,940.20x = 43,410.30 × 10,469.80
  4. Step 4: Simplify right side
    28,940.20x = 454,497,158.94
  5. Step 5: Solve for x
    x = 454,497,158.94/28,940.20
  6. Step 6: Final answer
    x = 15,704.70

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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.