Home / 20,467.73-28,243.45-11,515.04

Finding the Fourth Proportional to 20,467.73, 28,243.45 and 11,515.04

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Solution

The fourth proportional to 20,467.73, 28,243.45 and 11,515.04 is: 15,889.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,467.73 : 28,243.45 = 11,515.04 : x
  2. Step 2: Convert to fraction form
    20,467.73/28,243.45 = 11,515.04/x
  3. Step 3: Cross multiply
    20,467.73x = 28,243.45 × 11,515.04
  4. Step 4: Simplify right side
    20,467.73x = 325,224,329.66
  5. Step 5: Solve for x
    x = 325,224,329.66/20,467.73
  6. Step 6: Final answer
    x = 15,889.62

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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.