Home / 12,005.88-18,016.92-4,214.76

Finding the Fourth Proportional to 12,005.88, 18,016.92 and 4,214.76

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Solution

The fourth proportional to 12,005.88, 18,016.92 and 4,214.76 is: 6,324.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,005.88 : 18,016.92 = 4,214.76 : x
  2. Step 2: Convert to fraction form
    12,005.88/18,016.92 = 4,214.76/x
  3. Step 3: Cross multiply
    12,005.88x = 18,016.92 × 4,214.76
  4. Step 4: Simplify right side
    12,005.88x = 75,936,993.74
  5. Step 5: Solve for x
    x = 75,936,993.74/12,005.88
  6. Step 6: Final answer
    x = 6,324.98

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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.