Home / 11,991.24-17,971.16-6,438.08

Finding the Fourth Proportional to 11,991.24, 17,971.16 and 6,438.08

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Solution

The fourth proportional to 11,991.24, 17,971.16 and 6,438.08 is: 9,648.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,991.24 : 17,971.16 = 6,438.08 : x
  2. Step 2: Convert to fraction form
    11,991.24/17,971.16 = 6,438.08/x
  3. Step 3: Cross multiply
    11,991.24x = 17,971.16 × 6,438.08
  4. Step 4: Simplify right side
    11,991.24x = 115,699,778.51
  5. Step 5: Solve for x
    x = 115,699,778.51/11,991.24
  6. Step 6: Final answer
    x = 9,648.69

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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.