Home / 19,990.44-29,986.74-5,199.39

Finding the Fourth Proportional to 19,990.44, 29,986.74 and 5,199.39

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Solution

The fourth proportional to 19,990.44, 29,986.74 and 5,199.39 is: 7,799.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,990.44 : 29,986.74 = 5,199.39 : x
  2. Step 2: Convert to fraction form
    19,990.44/29,986.74 = 5,199.39/x
  3. Step 3: Cross multiply
    19,990.44x = 29,986.74 × 5,199.39
  4. Step 4: Simplify right side
    19,990.44x = 155,912,756.09
  5. Step 5: Solve for x
    x = 155,912,756.09/19,990.44
  6. Step 6: Final answer
    x = 7,799.37

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1.5x scale

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.