Home / 12,275.39-18,413.09-3,390.43

Finding the Fourth Proportional to 12,275.39, 18,413.09 and 3,390.43

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Solution

The fourth proportional to 12,275.39, 18,413.09 and 3,390.43 is: 5,085.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,275.39 : 18,413.09 = 3,390.43 : x
  2. Step 2: Convert to fraction form
    12,275.39/18,413.09 = 3,390.43/x
  3. Step 3: Cross multiply
    12,275.39x = 18,413.09 × 3,390.43
  4. Step 4: Simplify right side
    12,275.39x = 62,428,292.73
  5. Step 5: Solve for x
    x = 62,428,292.73/12,275.39
  6. Step 6: Final answer
    x = 5,085.65

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.