Home / 19,418.68-29,120.60-6,936.36

Finding the Fourth Proportional to 19,418.68, 29,120.60 and 6,936.36

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Solution

The fourth proportional to 19,418.68, 29,120.60 and 6,936.36 is: 10,401.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,418.68 : 29,120.60 = 6,936.36 : x
  2. Step 2: Convert to fraction form
    19,418.68/29,120.60 = 6,936.36/x
  3. Step 3: Cross multiply
    19,418.68x = 29,120.60 × 6,936.36
  4. Step 4: Simplify right side
    19,418.68x = 201,990,965.02
  5. Step 5: Solve for x
    x = 201,990,965.02/19,418.68
  6. Step 6: Final answer
    x = 10,401.89

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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.