Home / 31,442.45-43,408.53-20,846.43

Finding the Fourth Proportional to 31,442.45, 43,408.53 and 20,846.43

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Solution

The fourth proportional to 31,442.45, 43,408.53 and 20,846.43 is: 28,779.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,442.45 : 43,408.53 = 20,846.43 : x
  2. Step 2: Convert to fraction form
    31,442.45/43,408.53 = 20,846.43/x
  3. Step 3: Cross multiply
    31,442.45x = 43,408.53 × 20,846.43
  4. Step 4: Simplify right side
    31,442.45x = 904,912,882.05
  5. Step 5: Solve for x
    x = 904,912,882.05/31,442.45
  6. Step 6: Final answer
    x = 28,779.98

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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.