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Finding the Fourth Proportional to 14,183.68, 21,261.60 and 7,946.68

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Solution

The fourth proportional to 14,183.68, 21,261.60 and 7,946.68 is: 11,912.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,183.68 : 21,261.60 = 7,946.68 : x
  2. Step 2: Convert to fraction form
    14,183.68/21,261.60 = 7,946.68/x
  3. Step 3: Cross multiply
    14,183.68x = 21,261.60 × 7,946.68
  4. Step 4: Simplify right side
    14,183.68x = 168,959,131.49
  5. Step 5: Solve for x
    x = 168,959,131.49/14,183.68
  6. Step 6: Final answer
    x = 11,912.22

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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.