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Finding the Fourth Proportional to 20,201.64, 27,880.02 and 11,251.14

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Solution

The fourth proportional to 20,201.64, 27,880.02 and 11,251.14 is: 15,527.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,201.64 : 27,880.02 = 11,251.14 : x
  2. Step 2: Convert to fraction form
    20,201.64/27,880.02 = 11,251.14/x
  3. Step 3: Cross multiply
    20,201.64x = 27,880.02 × 11,251.14
  4. Step 4: Simplify right side
    20,201.64x = 313,682,008.22
  5. Step 5: Solve for x
    x = 313,682,008.22/20,201.64
  6. Step 6: Final answer
    x = 15,527.55

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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.