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Finding the Fourth Proportional to 16,661.82, 22,961.64 and 11,937.90

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Solution

The fourth proportional to 16,661.82, 22,961.64 and 11,937.90 is: 16,451.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,661.82 : 22,961.64 = 11,937.90 : x
  2. Step 2: Convert to fraction form
    16,661.82/22,961.64 = 11,937.90/x
  3. Step 3: Cross multiply
    16,661.82x = 22,961.64 × 11,937.90
  4. Step 4: Simplify right side
    16,661.82x = 274,113,762.16
  5. Step 5: Solve for x
    x = 274,113,762.16/16,661.82
  6. Step 6: Final answer
    x = 16,451.61

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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.