Home / 20,148.32-30,222.57-6,821.43

Finding the Fourth Proportional to 20,148.32, 30,222.57 and 6,821.43

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Solution

The fourth proportional to 20,148.32, 30,222.57 and 6,821.43 is: 10,232.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,148.32 : 30,222.57 = 6,821.43 : x
  2. Step 2: Convert to fraction form
    20,148.32/30,222.57 = 6,821.43/x
  3. Step 3: Cross multiply
    20,148.32x = 30,222.57 × 6,821.43
  4. Step 4: Simplify right side
    20,148.32x = 206,161,145.68
  5. Step 5: Solve for x
    x = 206,161,145.68/20,148.32
  6. Step 6: Final answer
    x = 10,232.18

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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.