Home / 11,999.12-17,992.44-5,422.16

Finding the Fourth Proportional to 11,999.12, 17,992.44 and 5,422.16

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Solution

The fourth proportional to 11,999.12, 17,992.44 and 5,422.16 is: 8,130.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,999.12 : 17,992.44 = 5,422.16 : x
  2. Step 2: Convert to fraction form
    11,999.12/17,992.44 = 5,422.16/x
  3. Step 3: Cross multiply
    11,999.12x = 17,992.44 × 5,422.16
  4. Step 4: Simplify right side
    11,999.12x = 97,557,888.47
  5. Step 5: Solve for x
    x = 97,557,888.47/11,999.12
  6. Step 6: Final answer
    x = 8,130.42

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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.