Home / 36,021.10-49,709.18-20,105.55

Finding the Fourth Proportional to 36,021.10, 49,709.18 and 20,105.55

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Solution

The fourth proportional to 36,021.10, 49,709.18 and 20,105.55 is: 27,745.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,021.10 : 49,709.18 = 20,105.55 : x
  2. Step 2: Convert to fraction form
    36,021.10/49,709.18 = 20,105.55/x
  3. Step 3: Cross multiply
    36,021.10x = 49,709.18 × 20,105.55
  4. Step 4: Simplify right side
    36,021.10x = 999,430,403.95
  5. Step 5: Solve for x
    x = 999,430,403.95/36,021.10
  6. Step 6: Final answer
    x = 27,745.69

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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.