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Finding the Fourth Proportional to 20,195.08, 27,868.74 and 11,243.08

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Solution

The fourth proportional to 20,195.08, 27,868.74 and 11,243.08 is: 15,515.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,195.08 : 27,868.74 = 11,243.08 : x
  2. Step 2: Convert to fraction form
    20,195.08/27,868.74 = 11,243.08/x
  3. Step 3: Cross multiply
    20,195.08x = 27,868.74 × 11,243.08
  4. Step 4: Simplify right side
    20,195.08x = 313,330,473.32
  5. Step 5: Solve for x
    x = 313,330,473.32/20,195.08
  6. Step 6: Final answer
    x = 15,515.19

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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.