Home / 11,189.58-15,442.83-6,999.18

Finding the Fourth Proportional to 11,189.58, 15,442.83 and 6,999.18

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Solution

The fourth proportional to 11,189.58, 15,442.83 and 6,999.18 is: 9,659.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,189.58 : 15,442.83 = 6,999.18 : x
  2. Step 2: Convert to fraction form
    11,189.58/15,442.83 = 6,999.18/x
  3. Step 3: Cross multiply
    11,189.58x = 15,442.83 × 6,999.18
  4. Step 4: Simplify right side
    11,189.58x = 108,087,146.88
  5. Step 5: Solve for x
    x = 108,087,146.88/11,189.58
  6. Step 6: Final answer
    x = 9,659.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.