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Finding the Fourth Proportional to 11,122.60, 16,659.60 and 9,664.60

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Solution

The fourth proportional to 11,122.60, 16,659.60 and 9,664.60 is: 14,475.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,122.60 : 16,659.60 = 9,664.60 : x
  2. Step 2: Convert to fraction form
    11,122.60/16,659.60 = 9,664.60/x
  3. Step 3: Cross multiply
    11,122.60x = 16,659.60 × 9,664.60
  4. Step 4: Simplify right side
    11,122.60x = 161,008,370.16
  5. Step 5: Solve for x
    x = 161,008,370.16/11,122.60
  6. Step 6: Final answer
    x = 14,475.79

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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.