Home / 21,977.82-30,329.45-11,906.23

Finding the Fourth Proportional to 21,977.82, 30,329.45 and 11,906.23

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Solution

The fourth proportional to 21,977.82, 30,329.45 and 11,906.23 is: 16,430.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,977.82 : 30,329.45 = 11,906.23 : x
  2. Step 2: Convert to fraction form
    21,977.82/30,329.45 = 11,906.23/x
  3. Step 3: Cross multiply
    21,977.82x = 30,329.45 × 11,906.23
  4. Step 4: Simplify right side
    21,977.82x = 361,109,407.47
  5. Step 5: Solve for x
    x = 361,109,407.47/21,977.82
  6. Step 6: Final answer
    x = 16,430.63

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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.