Home / 21,979,173.98-30,327,249.57-12,683,352.80

Finding the Fourth Proportional to 21,979,173.98, 30,327,249.57 and 12,683,352.80

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Solution

The fourth proportional to 21,979,173.98, 30,327,249.57 and 12,683,352.80 is: 17,500,712.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,979,173.98 : 30,327,249.57 = 12,683,352.80 : x
  2. Step 2: Convert to fraction form
    21,979,173.98/30,327,249.57 = 12,683,352.80/x
  3. Step 3: Cross multiply
    21,979,173.98x = 30,327,249.57 × 12,683,352.80
  4. Step 4: Simplify right side
    21,979,173.98x = 384,651,205,749,958.31
  5. Step 5: Solve for x
    x = 384,651,205,749,958.31/21,979,173.98
  6. Step 6: Final answer
    x = 17,500,712.54

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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.