Home / 19,629.36-29,439.87-6,478.60

Finding the Fourth Proportional to 19,629.36, 29,439.87 and 6,478.60

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Solution

The fourth proportional to 19,629.36, 29,439.87 and 6,478.60 is: 9,716.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,629.36 : 29,439.87 = 6,478.60 : x
  2. Step 2: Convert to fraction form
    19,629.36/29,439.87 = 6,478.60/x
  3. Step 3: Cross multiply
    19,629.36x = 29,439.87 × 6,478.60
  4. Step 4: Simplify right side
    19,629.36x = 190,729,141.78
  5. Step 5: Solve for x
    x = 190,729,141.78/19,629.36
  6. Step 6: Final answer
    x = 9,716.52

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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.