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Finding the Fourth Proportional to 11,995.25, 18,000.16 and 11,003.81

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Solution

The fourth proportional to 11,995.25, 18,000.16 and 11,003.81 is: 16,512.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,995.25 : 18,000.16 = 11,003.81 : x
  2. Step 2: Convert to fraction form
    11,995.25/18,000.16 = 11,003.81/x
  3. Step 3: Cross multiply
    11,995.25x = 18,000.16 × 11,003.81
  4. Step 4: Simplify right side
    11,995.25x = 198,070,223.10
  5. Step 5: Solve for x
    x = 198,070,223.10/11,995.25
  6. Step 6: Final answer
    x = 16,512.39

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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.