Home / 20,400,084.70-28,152,621.33-11,108,163.83

Finding the Fourth Proportional to 20,400,084.70, 28,152,621.33 and 11,108,163.83

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Solution

The fourth proportional to 20,400,084.70, 28,152,621.33 and 11,108,163.83 is: 15,329,540.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,400,084.70 : 28,152,621.33 = 11,108,163.83 : x
  2. Step 2: Convert to fraction form
    20,400,084.70/28,152,621.33 = 11,108,163.83/x
  3. Step 3: Cross multiply
    20,400,084.70x = 28,152,621.33 × 11,108,163.83
  4. Step 4: Simplify right side
    20,400,084.70x = 312,723,929,795,173.75
  5. Step 5: Solve for x
    x = 312,723,929,795,173.75/20,400,084.70
  6. Step 6: Final answer
    x = 15,329,540.76

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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.