Home / 21,993.48-30,351.04-11,921.92

Finding the Fourth Proportional to 21,993.48, 30,351.04 and 11,921.92

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Solution

The fourth proportional to 21,993.48, 30,351.04 and 11,921.92 is: 16,452.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,993.48 : 30,351.04 = 11,921.92 : x
  2. Step 2: Convert to fraction form
    21,993.48/30,351.04 = 11,921.92/x
  3. Step 3: Cross multiply
    21,993.48x = 30,351.04 × 11,921.92
  4. Step 4: Simplify right side
    21,993.48x = 361,842,670.80
  5. Step 5: Solve for x
    x = 361,842,670.80/21,993.48
  6. Step 6: Final answer
    x = 16,452.27

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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.