Home / 21,885.74-30,160.19-15,907.94

Finding the Fourth Proportional to 21,885.74, 30,160.19 and 15,907.94

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Solution

The fourth proportional to 21,885.74, 30,160.19 and 15,907.94 is: 21,922.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,885.74 : 30,160.19 = 15,907.94 : x
  2. Step 2: Convert to fraction form
    21,885.74/30,160.19 = 15,907.94/x
  3. Step 3: Cross multiply
    21,885.74x = 30,160.19 × 15,907.94
  4. Step 4: Simplify right side
    21,885.74x = 479,786,413.37
  5. Step 5: Solve for x
    x = 479,786,413.37/21,885.74
  6. Step 6: Final answer
    x = 21,922.33

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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.