Home / 20,120.87-30,181.53-6,081.02

Finding the Fourth Proportional to 20,120.87, 30,181.53 and 6,081.02

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Solution

The fourth proportional to 20,120.87, 30,181.53 and 6,081.02 is: 9,121.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120.87 : 30,181.53 = 6,081.02 : x
  2. Step 2: Convert to fraction form
    20,120.87/30,181.53 = 6,081.02/x
  3. Step 3: Cross multiply
    20,120.87x = 30,181.53 × 6,081.02
  4. Step 4: Simplify right side
    20,120.87x = 183,534,472.64
  5. Step 5: Solve for x
    x = 183,534,472.64/20,120.87
  6. Step 6: Final answer
    x = 9,121.60

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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.