Home / 21,965.45-30,312.29-11,893.97

Finding the Fourth Proportional to 21,965.45, 30,312.29 and 11,893.97

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Solution

The fourth proportional to 21,965.45, 30,312.29 and 11,893.97 is: 16,413.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,965.45 : 30,312.29 = 11,893.97 : x
  2. Step 2: Convert to fraction form
    21,965.45/30,312.29 = 11,893.97/x
  3. Step 3: Cross multiply
    21,965.45x = 30,312.29 × 11,893.97
  4. Step 4: Simplify right side
    21,965.45x = 360,533,573.41
  5. Step 5: Solve for x
    x = 360,533,573.41/21,965.45
  6. Step 6: Final answer
    x = 16,413.67

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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.