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Finding the Fourth Proportional to 12,190.50, 16,822.89 and 6,601.50

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Solution

The fourth proportional to 12,190.50, 16,822.89 and 6,601.50 is: 9,110.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.50 : 16,822.89 = 6,601.50 : x
  2. Step 2: Convert to fraction form
    12,190.50/16,822.89 = 6,601.50/x
  3. Step 3: Cross multiply
    12,190.50x = 16,822.89 × 6,601.50
  4. Step 4: Simplify right side
    12,190.50x = 111,056,308.34
  5. Step 5: Solve for x
    x = 111,056,308.34/12,190.50
  6. Step 6: Final answer
    x = 9,110.07

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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.