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Finding the Fourth Proportional to 11,609.50, 16,021.11 and 6,641.50

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Solution

The fourth proportional to 11,609.50, 16,021.11 and 6,641.50 is: 9,165.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,609.50 : 16,021.11 = 6,641.50 : x
  2. Step 2: Convert to fraction form
    11,609.50/16,021.11 = 6,641.50/x
  3. Step 3: Cross multiply
    11,609.50x = 16,021.11 × 6,641.50
  4. Step 4: Simplify right side
    11,609.50x = 106,404,202.07
  5. Step 5: Solve for x
    x = 106,404,202.07/11,609.50
  6. Step 6: Final answer
    x = 9,165.27

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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.