Home / 19,991.21-29,968.99-10,125.41

Finding the Fourth Proportional to 19,991.21, 29,968.99 and 10,125.41

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Solution

The fourth proportional to 19,991.21, 29,968.99 and 10,125.41 is: 15,179.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,991.21 : 29,968.99 = 10,125.41 : x
  2. Step 2: Convert to fraction form
    19,991.21/29,968.99 = 10,125.41/x
  3. Step 3: Cross multiply
    19,991.21x = 29,968.99 × 10,125.41
  4. Step 4: Simplify right side
    19,991.21x = 303,448,135.88
  5. Step 5: Solve for x
    x = 303,448,135.88/19,991.21
  6. Step 6: Final answer
    x = 15,179.08

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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.