Home / 28,979,819.80-43,469,729.70-18,902,123.80

Finding the Fourth Proportional to 28,979,819.80, 43,469,729.70 and 18,902,123.80

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Solution

The fourth proportional to 28,979,819.80, 43,469,729.70 and 18,902,123.80 is: 28,353,185.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,979,819.80 : 43,469,729.70 = 18,902,123.80 : x
  2. Step 2: Convert to fraction form
    28,979,819.80/43,469,729.70 = 18,902,123.80/x
  3. Step 3: Cross multiply
    28,979,819.80x = 43,469,729.70 × 18,902,123.80
  4. Step 4: Simplify right side
    28,979,819.80x = 821,670,212,341,937
  5. Step 5: Solve for x
    x = 821,670,212,341,937/28,979,819.80
  6. Step 6: Final answer
    x = 28,353,185.70

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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.