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Finding the Fourth Proportional to 20,274.52, 27,977.52 and 11,321.60

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Solution

The fourth proportional to 20,274.52, 27,977.52 and 11,321.60 is: 15,623.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,274.52 : 27,977.52 = 11,321.60 : x
  2. Step 2: Convert to fraction form
    20,274.52/27,977.52 = 11,321.60/x
  3. Step 3: Cross multiply
    20,274.52x = 27,977.52 × 11,321.60
  4. Step 4: Simplify right side
    20,274.52x = 316,750,290.43
  5. Step 5: Solve for x
    x = 316,750,290.43/20,274.52
  6. Step 6: Final answer
    x = 15,623.07

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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.