Home / 20,382.16-30,570.09-8,375.53

Finding the Fourth Proportional to 20,382.16, 30,570.09 and 8,375.53

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Solution

The fourth proportional to 20,382.16, 30,570.09 and 8,375.53 is: 12,562.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,382.16 : 30,570.09 = 8,375.53 : x
  2. Step 2: Convert to fraction form
    20,382.16/30,570.09 = 8,375.53/x
  3. Step 3: Cross multiply
    20,382.16x = 30,570.09 × 8,375.53
  4. Step 4: Simplify right side
    20,382.16x = 256,040,705.90
  5. Step 5: Solve for x
    x = 256,040,705.90/20,382.16
  6. Step 6: Final answer
    x = 12,562.00

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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.