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Finding the Fourth Proportional to 19,234.80, 28,852.20 and 10,940.40

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Solution

The fourth proportional to 19,234.80, 28,852.20 and 10,940.40 is: 16,410.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,234.80 : 28,852.20 = 10,940.40 : x
  2. Step 2: Convert to fraction form
    19,234.80/28,852.20 = 10,940.40/x
  3. Step 3: Cross multiply
    19,234.80x = 28,852.20 × 10,940.40
  4. Step 4: Simplify right side
    19,234.80x = 315,654,608.88
  5. Step 5: Solve for x
    x = 315,654,608.88/19,234.80
  6. Step 6: Final answer
    x = 16,410.60

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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.