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Finding the Fourth Proportional to 13,996.94, 20,995.42 and 13,296.18

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Solution

The fourth proportional to 13,996.94, 20,995.42 and 13,296.18 is: 19,944.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,996.94 : 20,995.42 = 13,296.18 : x
  2. Step 2: Convert to fraction form
    13,996.94/20,995.42 = 13,296.18/x
  3. Step 3: Cross multiply
    13,996.94x = 20,995.42 × 13,296.18
  4. Step 4: Simplify right side
    13,996.94x = 279,158,883.50
  5. Step 5: Solve for x
    x = 279,158,883.50/13,996.94
  6. Step 6: Final answer
    x = 19,944.28

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Double scale
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Similar ratio
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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.