Home / 21,992.06-30,348.92-11,920.52

Finding the Fourth Proportional to 21,992.06, 30,348.92 and 11,920.52

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Solution

The fourth proportional to 21,992.06, 30,348.92 and 11,920.52 is: 16,450.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,992.06 : 30,348.92 = 11,920.52 : x
  2. Step 2: Convert to fraction form
    21,992.06/30,348.92 = 11,920.52/x
  3. Step 3: Cross multiply
    21,992.06x = 30,348.92 × 11,920.52
  4. Step 4: Simplify right side
    21,992.06x = 361,774,907.84
  5. Step 5: Solve for x
    x = 361,774,907.84/21,992.06
  6. Step 6: Final answer
    x = 16,450.25

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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.