Home / 20,080.57-30,122.26-8,072.72

Finding the Fourth Proportional to 20,080.57, 30,122.26 and 8,072.72

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Solution

The fourth proportional to 20,080.57, 30,122.26 and 8,072.72 is: 12,109.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,080.57 : 30,122.26 = 8,072.72 : x
  2. Step 2: Convert to fraction form
    20,080.57/30,122.26 = 8,072.72/x
  3. Step 3: Cross multiply
    20,080.57x = 30,122.26 × 8,072.72
  4. Step 4: Simplify right side
    20,080.57x = 243,168,570.75
  5. Step 5: Solve for x
    x = 243,168,570.75/20,080.57
  6. Step 6: Final answer
    x = 12,109.65

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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.