Home / 13,185.71-19,786.36-4,871.60

Finding the Fourth Proportional to 13,185.71, 19,786.36 and 4,871.60

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Solution

The fourth proportional to 13,185.71, 19,786.36 and 4,871.60 is: 7,310.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.71 : 19,786.36 = 4,871.60 : x
  2. Step 2: Convert to fraction form
    13,185.71/19,786.36 = 4,871.60/x
  3. Step 3: Cross multiply
    13,185.71x = 19,786.36 × 4,871.60
  4. Step 4: Simplify right side
    13,185.71x = 96,391,231.38
  5. Step 5: Solve for x
    x = 96,391,231.38/13,185.71
  6. Step 6: Final answer
    x = 7,310.28

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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.