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Finding the Fourth Proportional to 11,647.96, 16,072.38 and 6,679

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Solution

The fourth proportional to 11,647.96, 16,072.38 and 6,679 is: 9,215.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,647.96 : 16,072.38 = 6,679 : x
  2. Step 2: Convert to fraction form
    11,647.96/16,072.38 = 6,679/x
  3. Step 3: Cross multiply
    11,647.96x = 16,072.38 × 6,679
  4. Step 4: Simplify right side
    11,647.96x = 107,347,426.02
  5. Step 5: Solve for x
    x = 107,347,426.02/11,647.96
  6. Step 6: Final answer
    x = 9,215.99

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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.