Home / 20,443,278.78-28,211,745.81-11,743,134.59

Finding the Fourth Proportional to 20,443,278.78, 28,211,745.81 and 11,743,134.59

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Solution

The fourth proportional to 20,443,278.78, 28,211,745.81 and 11,743,134.59 is: 16,205,537.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,443,278.78 : 28,211,745.81 = 11,743,134.59 : x
  2. Step 2: Convert to fraction form
    20,443,278.78/28,211,745.81 = 11,743,134.59/x
  3. Step 3: Cross multiply
    20,443,278.78x = 28,211,745.81 × 11,743,134.59
  4. Step 4: Simplify right side
    20,443,278.78x = 331,294,327,924,639.88
  5. Step 5: Solve for x
    x = 331,294,327,924,639.88/20,443,278.78
  6. Step 6: Final answer
    x = 16,205,537.84

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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.