Home / 20,274.57-27,977.29-11,321.54

Finding the Fourth Proportional to 20,274.57, 27,977.29 and 11,321.54

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Solution

The fourth proportional to 20,274.57, 27,977.29 and 11,321.54 is: 15,622.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,274.57 : 27,977.29 = 11,321.54 : x
  2. Step 2: Convert to fraction form
    20,274.57/27,977.29 = 11,321.54/x
  3. Step 3: Cross multiply
    20,274.57x = 27,977.29 × 11,321.54
  4. Step 4: Simplify right side
    20,274.57x = 316,745,867.94
  5. Step 5: Solve for x
    x = 316,745,867.94/20,274.57
  6. Step 6: Final answer
    x = 15,622.82

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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.