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Finding the Fourth Proportional to 12,338.81, 17,027.97 and 6,749.81

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Solution

The fourth proportional to 12,338.81, 17,027.97 and 6,749.81 is: 9,314.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,338.81 : 17,027.97 = 6,749.81 : x
  2. Step 2: Convert to fraction form
    12,338.81/17,027.97 = 6,749.81/x
  3. Step 3: Cross multiply
    12,338.81x = 17,027.97 × 6,749.81
  4. Step 4: Simplify right side
    12,338.81x = 114,935,579.44
  5. Step 5: Solve for x
    x = 114,935,579.44/12,338.81
  6. Step 6: Final answer
    x = 9,314.96

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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.