Home / 11,987.07-17,980.70-3,667.24

Finding the Fourth Proportional to 11,987.07, 17,980.70 and 3,667.24

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Solution

The fourth proportional to 11,987.07, 17,980.70 and 3,667.24 is: 5,500.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.07 : 17,980.70 = 3,667.24 : x
  2. Step 2: Convert to fraction form
    11,987.07/17,980.70 = 3,667.24/x
  3. Step 3: Cross multiply
    11,987.07x = 17,980.70 × 3,667.24
  4. Step 4: Simplify right side
    11,987.07x = 65,939,542.27
  5. Step 5: Solve for x
    x = 65,939,542.27/11,987.07
  6. Step 6: Final answer
    x = 5,500.89

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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.