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Finding the Fourth Proportional to 15,906.54, 21,958.92 and 9,941.52

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Solution

The fourth proportional to 15,906.54, 21,958.92 and 9,941.52 is: 13,724.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,906.54 : 21,958.92 = 9,941.52 : x
  2. Step 2: Convert to fraction form
    15,906.54/21,958.92 = 9,941.52/x
  3. Step 3: Cross multiply
    15,906.54x = 21,958.92 × 9,941.52
  4. Step 4: Simplify right side
    15,906.54x = 218,305,042.36
  5. Step 5: Solve for x
    x = 218,305,042.36/15,906.54
  6. Step 6: Final answer
    x = 13,724.23

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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.