Home / 19,986.44-29,982.88-10,121.72

Finding the Fourth Proportional to 19,986.44, 29,982.88 and 10,121.72

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Solution

The fourth proportional to 19,986.44, 29,982.88 and 10,121.72 is: 15,184.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,986.44 : 29,982.88 = 10,121.72 : x
  2. Step 2: Convert to fraction form
    19,986.44/29,982.88 = 10,121.72/x
  3. Step 3: Cross multiply
    19,986.44x = 29,982.88 × 10,121.72
  4. Step 4: Simplify right side
    19,986.44x = 303,478,316.15
  5. Step 5: Solve for x
    x = 303,478,316.15/19,986.44
  6. Step 6: Final answer
    x = 15,184.21

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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.