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Finding the Fourth Proportional to 17,917.72, 24,726 and 9,960.64

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Solution

The fourth proportional to 17,917.72, 24,726 and 9,960.64 is: 13,745.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,917.72 : 24,726 = 9,960.64 : x
  2. Step 2: Convert to fraction form
    17,917.72/24,726 = 9,960.64/x
  3. Step 3: Cross multiply
    17,917.72x = 24,726 × 9,960.64
  4. Step 4: Simplify right side
    17,917.72x = 246,286,784.64
  5. Step 5: Solve for x
    x = 246,286,784.64/17,917.72
  6. Step 6: Final answer
    x = 13,745.43

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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.