Home / 20,467.92-28,243.73-11,515.24

Finding the Fourth Proportional to 20,467.92, 28,243.73 and 11,515.24

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Solution

The fourth proportional to 20,467.92, 28,243.73 and 11,515.24 is: 15,889.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,467.92 : 28,243.73 = 11,515.24 : x
  2. Step 2: Convert to fraction form
    20,467.92/28,243.73 = 11,515.24/x
  3. Step 3: Cross multiply
    20,467.92x = 28,243.73 × 11,515.24
  4. Step 4: Simplify right side
    20,467.92x = 325,233,130.65
  5. Step 5: Solve for x
    x = 325,233,130.65/20,467.92
  6. Step 6: Final answer
    x = 15,889.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.