Home / 12,231,163.90-16,865,138.76-7,815,055.19

Finding the Fourth Proportional to 12,231,163.90, 16,865,138.76 and 7,815,055.19

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Solution

The fourth proportional to 12,231,163.90, 16,865,138.76 and 7,815,055.19 is: 10,775,915.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,231,163.90 : 16,865,138.76 = 7,815,055.19 : x
  2. Step 2: Convert to fraction form
    12,231,163.90/16,865,138.76 = 7,815,055.19/x
  3. Step 3: Cross multiply
    12,231,163.90x = 16,865,138.76 × 7,815,055.19
  4. Step 4: Simplify right side
    12,231,163.90x = 131,801,990,196,408.19
  5. Step 5: Solve for x
    x = 131,801,990,196,408.19/12,231,163.90
  6. Step 6: Final answer
    x = 10,775,915.63

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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.