Home / 20,121.04-30,181.56-5,331.12

Finding the Fourth Proportional to 20,121.04, 30,181.56 and 5,331.12

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Solution

The fourth proportional to 20,121.04, 30,181.56 and 5,331.12 is: 7,996.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.04 : 30,181.56 = 5,331.12 : x
  2. Step 2: Convert to fraction form
    20,121.04/30,181.56 = 5,331.12/x
  3. Step 3: Cross multiply
    20,121.04x = 30,181.56 × 5,331.12
  4. Step 4: Simplify right side
    20,121.04x = 160,901,518.15
  5. Step 5: Solve for x
    x = 160,901,518.15/20,121.04
  6. Step 6: Final answer
    x = 7,996.68

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Similar ratio
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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.