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Finding the Fourth Proportional to 20,193.81, 27,866.80 and 11,241.01

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Solution

The fourth proportional to 20,193.81, 27,866.80 and 11,241.01 is: 15,512.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,193.81 : 27,866.80 = 11,241.01 : x
  2. Step 2: Convert to fraction form
    20,193.81/27,866.80 = 11,241.01/x
  3. Step 3: Cross multiply
    20,193.81x = 27,866.80 × 11,241.01
  4. Step 4: Simplify right side
    20,193.81x = 313,250,977.47
  5. Step 5: Solve for x
    x = 313,250,977.47/20,193.81
  6. Step 6: Final answer
    x = 15,512.23

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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.