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Finding the Fourth Proportional to 11,745.57, 17,621.25 and 3,425.67

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Solution

The fourth proportional to 11,745.57, 17,621.25 and 3,425.67 is: 5,139.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,745.57 : 17,621.25 = 3,425.67 : x
  2. Step 2: Convert to fraction form
    11,745.57/17,621.25 = 3,425.67/x
  3. Step 3: Cross multiply
    11,745.57x = 17,621.25 × 3,425.67
  4. Step 4: Simplify right side
    11,745.57x = 60,364,587.49
  5. Step 5: Solve for x
    x = 60,364,587.49/11,745.57
  6. Step 6: Final answer
    x = 5,139.35

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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.