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Finding the Fourth Proportional to 12,170.32, 18,255.48 and 2,936.32

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Solution

The fourth proportional to 12,170.32, 18,255.48 and 2,936.32 is: 4,404.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,170.32 : 18,255.48 = 2,936.32 : x
  2. Step 2: Convert to fraction form
    12,170.32/18,255.48 = 2,936.32/x
  3. Step 3: Cross multiply
    12,170.32x = 18,255.48 × 2,936.32
  4. Step 4: Simplify right side
    12,170.32x = 53,603,931.03
  5. Step 5: Solve for x
    x = 53,603,931.03/12,170.32
  6. Step 6: Final answer
    x = 4,404.48

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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.