Home / 27,991.25-41,987.21-11,978.62

Finding the Fourth Proportional to 27,991.25, 41,987.21 and 11,978.62

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Solution

The fourth proportional to 27,991.25, 41,987.21 and 11,978.62 is: 17,968.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,991.25 : 41,987.21 = 11,978.62 : x
  2. Step 2: Convert to fraction form
    27,991.25/41,987.21 = 11,978.62/x
  3. Step 3: Cross multiply
    27,991.25x = 41,987.21 × 11,978.62
  4. Step 4: Simplify right side
    27,991.25x = 502,948,773.56
  5. Step 5: Solve for x
    x = 502,948,773.56/27,991.25
  6. Step 6: Final answer
    x = 17,968.07

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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.