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Finding the Fourth Proportional to 11,838.30, 17,745.30 and 6,905.40

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Solution

The fourth proportional to 11,838.30, 17,745.30 and 6,905.40 is: 10,351.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,838.30 : 17,745.30 = 6,905.40 : x
  2. Step 2: Convert to fraction form
    11,838.30/17,745.30 = 6,905.40/x
  3. Step 3: Cross multiply
    11,838.30x = 17,745.30 × 6,905.40
  4. Step 4: Simplify right side
    11,838.30x = 122,538,394.62
  5. Step 5: Solve for x
    x = 122,538,394.62/11,838.30
  6. Step 6: Final answer
    x = 10,351.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.