Home / 20,130.68-30,198.12-6,805.23

Finding the Fourth Proportional to 20,130.68, 30,198.12 and 6,805.23

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Solution

The fourth proportional to 20,130.68, 30,198.12 and 6,805.23 is: 10,208.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,130.68 : 30,198.12 = 6,805.23 : x
  2. Step 2: Convert to fraction form
    20,130.68/30,198.12 = 6,805.23/x
  3. Step 3: Cross multiply
    20,130.68x = 30,198.12 × 6,805.23
  4. Step 4: Simplify right side
    20,130.68x = 205,505,152.17
  5. Step 5: Solve for x
    x = 205,505,152.17/20,130.68
  6. Step 6: Final answer
    x = 10,208.56

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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.