Home / 36,021.21-49,709.79-20,105.66

Finding the Fourth Proportional to 36,021.21, 49,709.79 and 20,105.66

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Solution

The fourth proportional to 36,021.21, 49,709.79 and 20,105.66 is: 27,746.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,021.21 : 49,709.79 = 20,105.66 : x
  2. Step 2: Convert to fraction form
    36,021.21/49,709.79 = 20,105.66/x
  3. Step 3: Cross multiply
    36,021.21x = 49,709.79 × 20,105.66
  4. Step 4: Simplify right side
    36,021.21x = 999,448,136.41
  5. Step 5: Solve for x
    x = 999,448,136.41/36,021.21
  6. Step 6: Final answer
    x = 27,746.10

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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.