Home / 11,977.20-17,966.60-4,079.60

Finding the Fourth Proportional to 11,977.20, 17,966.60 and 4,079.60

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Solution

The fourth proportional to 11,977.20, 17,966.60 and 4,079.60 is: 6,119.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,977.20 : 17,966.60 = 4,079.60 : x
  2. Step 2: Convert to fraction form
    11,977.20/17,966.60 = 4,079.60/x
  3. Step 3: Cross multiply
    11,977.20x = 17,966.60 × 4,079.60
  4. Step 4: Simplify right side
    11,977.20x = 73,296,541.36
  5. Step 5: Solve for x
    x = 73,296,541.36/11,977.20
  6. Step 6: Final answer
    x = 6,119.67

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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.