Home / 15,906.04-21,958.55-11,211.28

Finding the Fourth Proportional to 15,906.04, 21,958.55 and 11,211.28

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Solution

The fourth proportional to 15,906.04, 21,958.55 and 11,211.28 is: 15,477.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,906.04 : 21,958.55 = 11,211.28 : x
  2. Step 2: Convert to fraction form
    15,906.04/21,958.55 = 11,211.28/x
  3. Step 3: Cross multiply
    15,906.04x = 21,958.55 × 11,211.28
  4. Step 4: Simplify right side
    15,906.04x = 246,183,452.44
  5. Step 5: Solve for x
    x = 246,183,452.44/15,906.04
  6. Step 6: Final answer
    x = 15,477.36

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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.