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Finding the Fourth Proportional to 11,906.40, 16,430.22 and 6,601.16

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Solution

The fourth proportional to 11,906.40, 16,430.22 and 6,601.16 is: 9,109.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,906.40 : 16,430.22 = 6,601.16 : x
  2. Step 2: Convert to fraction form
    11,906.40/16,430.22 = 6,601.16/x
  3. Step 3: Cross multiply
    11,906.40x = 16,430.22 × 6,601.16
  4. Step 4: Simplify right side
    11,906.40x = 108,458,511.06
  5. Step 5: Solve for x
    x = 108,458,511.06/11,906.40
  6. Step 6: Final answer
    x = 9,109.26

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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.