Home / 11,987.98-17,973.19-5,742.61

Finding the Fourth Proportional to 11,987.98, 17,973.19 and 5,742.61

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Solution

The fourth proportional to 11,987.98, 17,973.19 and 5,742.61 is: 8,609.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.98 : 17,973.19 = 5,742.61 : x
  2. Step 2: Convert to fraction form
    11,987.98/17,973.19 = 5,742.61/x
  3. Step 3: Cross multiply
    11,987.98x = 17,973.19 × 5,742.61
  4. Step 4: Simplify right side
    11,987.98x = 103,213,020.63
  5. Step 5: Solve for x
    x = 103,213,020.63/11,987.98
  6. Step 6: Final answer
    x = 8,609.71

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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.