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Finding the Fourth Proportional to 11,107.89, 15,328.89 and 6,072.13

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Solution

The fourth proportional to 11,107.89, 15,328.89 and 6,072.13 is: 8,379.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,107.89 : 15,328.89 = 6,072.13 : x
  2. Step 2: Convert to fraction form
    11,107.89/15,328.89 = 6,072.13/x
  3. Step 3: Cross multiply
    11,107.89x = 15,328.89 × 6,072.13
  4. Step 4: Simplify right side
    11,107.89x = 93,079,020.80
  5. Step 5: Solve for x
    x = 93,079,020.80/11,107.89
  6. Step 6: Final answer
    x = 8,379.54

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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.