Home / 11,118.36-15,346.62-6,405.96

Finding the Fourth Proportional to 11,118.36, 15,346.62 and 6,405.96

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Solution

The fourth proportional to 11,118.36, 15,346.62 and 6,405.96 is: 8,842.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,118.36 : 15,346.62 = 6,405.96 : x
  2. Step 2: Convert to fraction form
    11,118.36/15,346.62 = 6,405.96/x
  3. Step 3: Cross multiply
    11,118.36x = 15,346.62 × 6,405.96
  4. Step 4: Simplify right side
    11,118.36x = 98,309,833.86
  5. Step 5: Solve for x
    x = 98,309,833.86/11,118.36
  6. Step 6: Final answer
    x = 8,842.12

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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.