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Finding the Fourth Proportional to 11,695.63, 16,135.38 and 7,211.59

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Solution

The fourth proportional to 11,695.63, 16,135.38 and 7,211.59 is: 9,949.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,695.63 : 16,135.38 = 7,211.59 : x
  2. Step 2: Convert to fraction form
    11,695.63/16,135.38 = 7,211.59/x
  3. Step 3: Cross multiply
    11,695.63x = 16,135.38 × 7,211.59
  4. Step 4: Simplify right side
    11,695.63x = 116,361,745.05
  5. Step 5: Solve for x
    x = 116,361,745.05/11,695.63
  6. Step 6: Final answer
    x = 9,949.16

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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.