Home / 21,313.67-29,413.13-12,361.55

Finding the Fourth Proportional to 21,313.67, 29,413.13 and 12,361.55

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Solution

The fourth proportional to 21,313.67, 29,413.13 and 12,361.55 is: 17,059.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.67 : 29,413.13 = 12,361.55 : x
  2. Step 2: Convert to fraction form
    21,313.67/29,413.13 = 12,361.55/x
  3. Step 3: Cross multiply
    21,313.67x = 29,413.13 × 12,361.55
  4. Step 4: Simplify right side
    21,313.67x = 363,591,668.28
  5. Step 5: Solve for x
    x = 363,591,668.28/21,313.67
  6. Step 6: Final answer
    x = 17,059.09

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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.