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Finding the Fourth Proportional to 11,770.72, 17,639.67 and 8,845.60

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Solution

The fourth proportional to 11,770.72, 17,639.67 and 8,845.60 is: 13,256.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,770.72 : 17,639.67 = 8,845.60 : x
  2. Step 2: Convert to fraction form
    11,770.72/17,639.67 = 8,845.60/x
  3. Step 3: Cross multiply
    11,770.72x = 17,639.67 × 8,845.60
  4. Step 4: Simplify right side
    11,770.72x = 156,033,420.72
  5. Step 5: Solve for x
    x = 156,033,420.72/11,770.72
  6. Step 6: Final answer
    x = 13,256.07

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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.