Home / 11,579.90-15,971.82-7,331.65

Finding the Fourth Proportional to 11,579.90, 15,971.82 and 7,331.65

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Solution

The fourth proportional to 11,579.90, 15,971.82 and 7,331.65 is: 10,112.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,579.90 : 15,971.82 = 7,331.65 : x
  2. Step 2: Convert to fraction form
    11,579.90/15,971.82 = 7,331.65/x
  3. Step 3: Cross multiply
    11,579.90x = 15,971.82 × 7,331.65
  4. Step 4: Simplify right side
    11,579.90x = 117,099,726.68
  5. Step 5: Solve for x
    x = 117,099,726.68/11,579.90
  6. Step 6: Final answer
    x = 10,112.33

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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.