Home / 20,363,121.69-28,100,860.23-15,159,379.29

Finding the Fourth Proportional to 20,363,121.69, 28,100,860.23 and 15,159,379.29

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Solution

The fourth proportional to 20,363,121.69, 28,100,860.23 and 15,159,379.29 is: 20,919,759.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,363,121.69 : 28,100,860.23 = 15,159,379.29 : x
  2. Step 2: Convert to fraction form
    20,363,121.69/28,100,860.23 = 15,159,379.29/x
  3. Step 3: Cross multiply
    20,363,121.69x = 28,100,860.23 × 15,159,379.29
  4. Step 4: Simplify right side
    20,363,121.69x = 425,991,598,601,846.62
  5. Step 5: Solve for x
    x = 425,991,598,601,846.62/20,363,121.69
  6. Step 6: Final answer
    x = 20,919,759.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.