Home / 15,027.21-20,735.96-8,311.77

Finding the Fourth Proportional to 15,027.21, 20,735.96 and 8,311.77

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Solution

The fourth proportional to 15,027.21, 20,735.96 and 8,311.77 is: 11,469.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,027.21 : 20,735.96 = 8,311.77 : x
  2. Step 2: Convert to fraction form
    15,027.21/20,735.96 = 8,311.77/x
  3. Step 3: Cross multiply
    15,027.21x = 20,735.96 × 8,311.77
  4. Step 4: Simplify right side
    15,027.21x = 172,352,530.25
  5. Step 5: Solve for x
    x = 172,352,530.25/15,027.21
  6. Step 6: Final answer
    x = 11,469.36

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1.5x scale

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.