Home / 13,729.57-18,946.66-7,679.75

Finding the Fourth Proportional to 13,729.57, 18,946.66 and 7,679.75

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Solution

The fourth proportional to 13,729.57, 18,946.66 and 7,679.75 is: 10,597.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,729.57 : 18,946.66 = 7,679.75 : x
  2. Step 2: Convert to fraction form
    13,729.57/18,946.66 = 7,679.75/x
  3. Step 3: Cross multiply
    13,729.57x = 18,946.66 × 7,679.75
  4. Step 4: Simplify right side
    13,729.57x = 145,505,612.14
  5. Step 5: Solve for x
    x = 145,505,612.14/13,729.57
  6. Step 6: Final answer
    x = 10,597.97

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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.