Home / 28,979,824.80-43,469,737.20-18,902,128.80

Finding the Fourth Proportional to 28,979,824.80, 43,469,737.20 and 18,902,128.80

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Solution

The fourth proportional to 28,979,824.80, 43,469,737.20 and 18,902,128.80 is: 28,353,193.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,979,824.80 : 43,469,737.20 = 18,902,128.80 : x
  2. Step 2: Convert to fraction form
    28,979,824.80/43,469,737.20 = 18,902,128.80/x
  3. Step 3: Cross multiply
    28,979,824.80x = 43,469,737.20 × 18,902,128.80
  4. Step 4: Simplify right side
    28,979,824.80x = 821,670,571,456,551.50
  5. Step 5: Solve for x
    x = 821,670,571,456,551.50/28,979,824.80
  6. Step 6: Final answer
    x = 28,353,193.20

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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.