Home / 20,103.08-27,738.09-11,605.05

Finding the Fourth Proportional to 20,103.08, 27,738.09 and 11,605.05

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Solution

The fourth proportional to 20,103.08, 27,738.09 and 11,605.05 is: 16,012.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.08 : 27,738.09 = 11,605.05 : x
  2. Step 2: Convert to fraction form
    20,103.08/27,738.09 = 11,605.05/x
  3. Step 3: Cross multiply
    20,103.08x = 27,738.09 × 11,605.05
  4. Step 4: Simplify right side
    20,103.08x = 321,901,921.35
  5. Step 5: Solve for x
    x = 321,901,921.35/20,103.08
  6. Step 6: Final answer
    x = 16,012.57

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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.