Home / 12,005.28-18,007.92-4,212.27

Finding the Fourth Proportional to 12,005.28, 18,007.92 and 4,212.27

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Solution

The fourth proportional to 12,005.28, 18,007.92 and 4,212.27 is: 6,318.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,005.28 : 18,007.92 = 4,212.27 : x
  2. Step 2: Convert to fraction form
    12,005.28/18,007.92 = 4,212.27/x
  3. Step 3: Cross multiply
    12,005.28x = 18,007.92 × 4,212.27
  4. Step 4: Simplify right side
    12,005.28x = 75,854,221.18
  5. Step 5: Solve for x
    x = 75,854,221.18/12,005.28
  6. Step 6: Final answer
    x = 6,318.41

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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.