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Finding the Fourth Proportional to 12,007.92, 18,016.02 and 4,991.70

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Solution

The fourth proportional to 12,007.92, 18,016.02 and 4,991.70 is: 7,489.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,007.92 : 18,016.02 = 4,991.70 : x
  2. Step 2: Convert to fraction form
    12,007.92/18,016.02 = 4,991.70/x
  3. Step 3: Cross multiply
    12,007.92x = 18,016.02 × 4,991.70
  4. Step 4: Simplify right side
    12,007.92x = 89,930,567.03
  5. Step 5: Solve for x
    x = 89,930,567.03/12,007.92
  6. Step 6: Final answer
    x = 7,489.27

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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.