Home / 11,984.09-17,965.20-4,188.65

Finding the Fourth Proportional to 11,984.09, 17,965.20 and 4,188.65

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Solution

The fourth proportional to 11,984.09, 17,965.20 and 4,188.65 is: 6,279.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,984.09 : 17,965.20 = 4,188.65 : x
  2. Step 2: Convert to fraction form
    11,984.09/17,965.20 = 4,188.65/x
  3. Step 3: Cross multiply
    11,984.09x = 17,965.20 × 4,188.65
  4. Step 4: Simplify right side
    11,984.09x = 75,249,979.89
  5. Step 5: Solve for x
    x = 75,249,979.89/11,984.09
  6. Step 6: Final answer
    x = 6,279.16

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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.