Home / 20,219.80-30,329.73-7,072.15

Finding the Fourth Proportional to 20,219.80, 30,329.73 and 7,072.15

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Solution

The fourth proportional to 20,219.80, 30,329.73 and 7,072.15 is: 10,608.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219.80 : 30,329.73 = 7,072.15 : x
  2. Step 2: Convert to fraction form
    20,219.80/30,329.73 = 7,072.15/x
  3. Step 3: Cross multiply
    20,219.80x = 30,329.73 × 7,072.15
  4. Step 4: Simplify right side
    20,219.80x = 214,496,400.02
  5. Step 5: Solve for x
    x = 214,496,400.02/20,219.80
  6. Step 6: Final answer
    x = 10,608.24

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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.