Home / 11,995.86-18,003.42-5,422.62

Finding the Fourth Proportional to 11,995.86, 18,003.42 and 5,422.62

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Solution

The fourth proportional to 11,995.86, 18,003.42 and 5,422.62 is: 8,138.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,995.86 : 18,003.42 = 5,422.62 : x
  2. Step 2: Convert to fraction form
    11,995.86/18,003.42 = 5,422.62/x
  3. Step 3: Cross multiply
    11,995.86x = 18,003.42 × 5,422.62
  4. Step 4: Simplify right side
    11,995.86x = 97,625,705.36
  5. Step 5: Solve for x
    x = 97,625,705.36/11,995.86
  6. Step 6: Final answer
    x = 8,138.28

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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.