Home / 13,743.78-20,611.79-5,308.34

Finding the Fourth Proportional to 13,743.78, 20,611.79 and 5,308.34

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Solution

The fourth proportional to 13,743.78, 20,611.79 and 5,308.34 is: 7,961.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,743.78 : 20,611.79 = 5,308.34 : x
  2. Step 2: Convert to fraction form
    13,743.78/20,611.79 = 5,308.34/x
  3. Step 3: Cross multiply
    13,743.78x = 20,611.79 × 5,308.34
  4. Step 4: Simplify right side
    13,743.78x = 109,414,294.56
  5. Step 5: Solve for x
    x = 109,414,294.56/13,743.78
  6. Step 6: Final answer
    x = 7,961.01

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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.