Home / 31,563.85-47,408.85-19,738.66

Finding the Fourth Proportional to 31,563.85, 47,408.85 and 19,738.66

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Solution

The fourth proportional to 31,563.85, 47,408.85 and 19,738.66 is: 29,647.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,563.85 : 47,408.85 = 19,738.66 : x
  2. Step 2: Convert to fraction form
    31,563.85/47,408.85 = 19,738.66/x
  3. Step 3: Cross multiply
    31,563.85x = 47,408.85 × 19,738.66
  4. Step 4: Simplify right side
    31,563.85x = 935,787,171.14
  5. Step 5: Solve for x
    x = 935,787,171.14/31,563.85
  6. Step 6: Final answer
    x = 29,647.43

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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.