Home / 12,120.56-18,176.03-5,103.94

Finding the Fourth Proportional to 12,120.56, 18,176.03 and 5,103.94

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Solution

The fourth proportional to 12,120.56, 18,176.03 and 5,103.94 is: 7,653.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,120.56 : 18,176.03 = 5,103.94 : x
  2. Step 2: Convert to fraction form
    12,120.56/18,176.03 = 5,103.94/x
  3. Step 3: Cross multiply
    12,120.56x = 18,176.03 × 5,103.94
  4. Step 4: Simplify right side
    12,120.56x = 92,769,295.60
  5. Step 5: Solve for x
    x = 92,769,295.60/12,120.56
  6. Step 6: Final answer
    x = 7,653.88

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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.