Home / 18,668.36-27,999.30-6,979.16

Finding the Fourth Proportional to 18,668.36, 27,999.30 and 6,979.16

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Solution

The fourth proportional to 18,668.36, 27,999.30 and 6,979.16 is: 10,467.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,668.36 : 27,999.30 = 6,979.16 : x
  2. Step 2: Convert to fraction form
    18,668.36/27,999.30 = 6,979.16/x
  3. Step 3: Cross multiply
    18,668.36x = 27,999.30 × 6,979.16
  4. Step 4: Simplify right side
    18,668.36x = 195,411,594.59
  5. Step 5: Solve for x
    x = 195,411,594.59/18,668.36
  6. Step 6: Final answer
    x = 10,467.53

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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.