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Finding the Fourth Proportional to 12,258.72, 16,917.86 and 6,953.88

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Solution

The fourth proportional to 12,258.72, 16,917.86 and 6,953.88 is: 9,596.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,258.72 : 16,917.86 = 6,953.88 : x
  2. Step 2: Convert to fraction form
    12,258.72/16,917.86 = 6,953.88/x
  3. Step 3: Cross multiply
    12,258.72x = 16,917.86 × 6,953.88
  4. Step 4: Simplify right side
    12,258.72x = 117,644,768.30
  5. Step 5: Solve for x
    x = 117,644,768.30/12,258.72
  6. Step 6: Final answer
    x = 9,596.82

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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.