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Finding the Fourth Proportional to 27,076.34, 40,639.09 and 18,809.48

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Solution

The fourth proportional to 27,076.34, 40,639.09 and 18,809.48 is: 28,231.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,076.34 : 40,639.09 = 18,809.48 : x
  2. Step 2: Convert to fraction form
    27,076.34/40,639.09 = 18,809.48/x
  3. Step 3: Cross multiply
    27,076.34x = 40,639.09 × 18,809.48
  4. Step 4: Simplify right side
    27,076.34x = 764,400,150.57
  5. Step 5: Solve for x
    x = 764,400,150.57/27,076.34
  6. Step 6: Final answer
    x = 28,231.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.