Home / 19,668.33-27,139.95-11,170.40

Finding the Fourth Proportional to 19,668.33, 27,139.95 and 11,170.40

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Solution

The fourth proportional to 19,668.33, 27,139.95 and 11,170.40 is: 15,413.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,668.33 : 27,139.95 = 11,170.40 : x
  2. Step 2: Convert to fraction form
    19,668.33/27,139.95 = 11,170.40/x
  3. Step 3: Cross multiply
    19,668.33x = 27,139.95 × 11,170.40
  4. Step 4: Simplify right side
    19,668.33x = 303,163,961.78
  5. Step 5: Solve for x
    x = 303,163,961.78/19,668.33
  6. Step 6: Final answer
    x = 15,413.81

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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.