Home / 21,149,408.72-29,186,130.12-11,491,616.72

Finding the Fourth Proportional to 21,149,408.72, 29,186,130.12 and 11,491,616.72

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Solution

The fourth proportional to 21,149,408.72, 29,186,130.12 and 11,491,616.72 is: 15,858,401.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,149,408.72 : 29,186,130.12 = 11,491,616.72 : x
  2. Step 2: Convert to fraction form
    21,149,408.72/29,186,130.12 = 11,491,616.72/x
  3. Step 3: Cross multiply
    21,149,408.72x = 29,186,130.12 × 11,491,616.72
  4. Step 4: Simplify right side
    21,149,408.72x = 335,395,820,879,087.62
  5. Step 5: Solve for x
    x = 335,395,820,879,087.62/21,149,408.72
  6. Step 6: Final answer
    x = 15,858,401.78

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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.