Home / 20,745.60-31,118.34-5,163.22

Finding the Fourth Proportional to 20,745.60, 31,118.34 and 5,163.22

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Solution

The fourth proportional to 20,745.60, 31,118.34 and 5,163.22 is: 7,744.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745.60 : 31,118.34 = 5,163.22 : x
  2. Step 2: Convert to fraction form
    20,745.60/31,118.34 = 5,163.22/x
  3. Step 3: Cross multiply
    20,745.60x = 31,118.34 × 5,163.22
  4. Step 4: Simplify right side
    20,745.60x = 160,670,835.45
  5. Step 5: Solve for x
    x = 160,670,835.45/20,745.60
  6. Step 6: Final answer
    x = 7,744.82

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1.5x scale

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.