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Finding the Fourth Proportional to 12,605.09, 17,394.75 and 6,939.54

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Solution

The fourth proportional to 12,605.09, 17,394.75 and 6,939.54 is: 9,576.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,605.09 : 17,394.75 = 6,939.54 : x
  2. Step 2: Convert to fraction form
    12,605.09/17,394.75 = 6,939.54/x
  3. Step 3: Cross multiply
    12,605.09x = 17,394.75 × 6,939.54
  4. Step 4: Simplify right side
    12,605.09x = 120,711,563.42
  5. Step 5: Solve for x
    x = 120,711,563.42/12,605.09
  6. Step 6: Final answer
    x = 9,576.42

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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.