Home / 20,170.56-30,235.20-7,012.12

Finding the Fourth Proportional to 20,170.56, 30,235.20 and 7,012.12

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Solution

The fourth proportional to 20,170.56, 30,235.20 and 7,012.12 is: 10,511.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,170.56 : 30,235.20 = 7,012.12 : x
  2. Step 2: Convert to fraction form
    20,170.56/30,235.20 = 7,012.12/x
  3. Step 3: Cross multiply
    20,170.56x = 30,235.20 × 7,012.12
  4. Step 4: Simplify right side
    20,170.56x = 212,012,850.62
  5. Step 5: Solve for x
    x = 212,012,850.62/20,170.56
  6. Step 6: Final answer
    x = 10,511.00

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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.