Home / 19,419.44-29,129.80-5,379.60

Finding the Fourth Proportional to 19,419.44, 29,129.80 and 5,379.60

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Solution

The fourth proportional to 19,419.44, 29,129.80 and 5,379.60 is: 8,069.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,419.44 : 29,129.80 = 5,379.60 : x
  2. Step 2: Convert to fraction form
    19,419.44/29,129.80 = 5,379.60/x
  3. Step 3: Cross multiply
    19,419.44x = 29,129.80 × 5,379.60
  4. Step 4: Simplify right side
    19,419.44x = 156,706,767.87
  5. Step 5: Solve for x
    x = 156,706,767.87/19,419.44
  6. Step 6: Final answer
    x = 8,069.58

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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.