Home / 20,942.47-31,408.83-6,147.41

Finding the Fourth Proportional to 20,942.47, 31,408.83 and 6,147.41

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Solution

The fourth proportional to 20,942.47, 31,408.83 and 6,147.41 is: 9,219.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,942.47 : 31,408.83 = 6,147.41 : x
  2. Step 2: Convert to fraction form
    20,942.47/31,408.83 = 6,147.41/x
  3. Step 3: Cross multiply
    20,942.47x = 31,408.83 × 6,147.41
  4. Step 4: Simplify right side
    20,942.47x = 193,082,955.63
  5. Step 5: Solve for x
    x = 193,082,955.63/20,942.47
  6. Step 6: Final answer
    x = 9,219.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.