Home / 20,102.37-27,742.97-11,152.75

Finding the Fourth Proportional to 20,102.37, 27,742.97 and 11,152.75

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Solution

The fourth proportional to 20,102.37, 27,742.97 and 11,152.75 is: 15,391.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,102.37 : 27,742.97 = 11,152.75 : x
  2. Step 2: Convert to fraction form
    20,102.37/27,742.97 = 11,152.75/x
  3. Step 3: Cross multiply
    20,102.37x = 27,742.97 × 11,152.75
  4. Step 4: Simplify right side
    20,102.37x = 309,410,408.67
  5. Step 5: Solve for x
    x = 309,410,408.67/20,102.37
  6. Step 6: Final answer
    x = 15,391.74

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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.