Home / 20,072.32-30,115.46-8,980.18

Finding the Fourth Proportional to 20,072.32, 30,115.46 and 8,980.18

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Solution

The fourth proportional to 20,072.32, 30,115.46 and 8,980.18 is: 13,473.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,072.32 : 30,115.46 = 8,980.18 : x
  2. Step 2: Convert to fraction form
    20,072.32/30,115.46 = 8,980.18/x
  3. Step 3: Cross multiply
    20,072.32x = 30,115.46 × 8,980.18
  4. Step 4: Simplify right side
    20,072.32x = 270,442,198.74
  5. Step 5: Solve for x
    x = 270,442,198.74/20,072.32
  6. Step 6: Final answer
    x = 13,473.39

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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.