Home / 20,220.37-30,344.43-7,072.75

Finding the Fourth Proportional to 20,220.37, 30,344.43 and 7,072.75

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Solution

The fourth proportional to 20,220.37, 30,344.43 and 7,072.75 is: 10,613.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.37 : 30,344.43 = 7,072.75 : x
  2. Step 2: Convert to fraction form
    20,220.37/30,344.43 = 7,072.75/x
  3. Step 3: Cross multiply
    20,220.37x = 30,344.43 × 7,072.75
  4. Step 4: Simplify right side
    20,220.37x = 214,618,567.28
  5. Step 5: Solve for x
    x = 214,618,567.28/20,220.37
  6. Step 6: Final answer
    x = 10,613.98

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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.