Home / 15,786.44-23,668.68-7,989.92

Finding the Fourth Proportional to 15,786.44, 23,668.68 and 7,989.92

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Solution

The fourth proportional to 15,786.44, 23,668.68 and 7,989.92 is: 11,979.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,786.44 : 23,668.68 = 7,989.92 : x
  2. Step 2: Convert to fraction form
    15,786.44/23,668.68 = 7,989.92/x
  3. Step 3: Cross multiply
    15,786.44x = 23,668.68 × 7,989.92
  4. Step 4: Simplify right side
    15,786.44x = 189,110,859.71
  5. Step 5: Solve for x
    x = 189,110,859.71/15,786.44
  6. Step 6: Final answer
    x = 11,979.32

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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.