Home / 21,491,855.80-32,237,783.70-18,972,431.80

Finding the Fourth Proportional to 21,491,855.80, 32,237,783.70 and 18,972,431.80

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Solution

The fourth proportional to 21,491,855.80, 32,237,783.70 and 18,972,431.80 is: 28,458,647.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,491,855.80 : 32,237,783.70 = 18,972,431.80 : x
  2. Step 2: Convert to fraction form
    21,491,855.80/32,237,783.70 = 18,972,431.80/x
  3. Step 3: Cross multiply
    21,491,855.80x = 32,237,783.70 × 18,972,431.80
  4. Step 4: Simplify right side
    21,491,855.80x = 611,629,152,631,401.62
  5. Step 5: Solve for x
    x = 611,629,152,631,401.62/21,491,855.80
  6. Step 6: Final answer
    x = 28,458,647.70

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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.