Home / 13,419,157.77-18,515,977.74-7,914,255.21

Finding the Fourth Proportional to 13,419,157.77, 18,515,977.74 and 7,914,255.21

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Solution

The fourth proportional to 13,419,157.77, 18,515,977.74 and 7,914,255.21 is: 10,920,221.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419,157.77 : 18,515,977.74 = 7,914,255.21 : x
  2. Step 2: Convert to fraction form
    13,419,157.77/18,515,977.74 = 7,914,255.21/x
  3. Step 3: Cross multiply
    13,419,157.77x = 18,515,977.74 × 7,914,255.21
  4. Step 4: Simplify right side
    13,419,157.77x = 146,540,173,297,039
  5. Step 5: Solve for x
    x = 146,540,173,297,039/13,419,157.77
  6. Step 6: Final answer
    x = 10,920,221.36

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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.