Home / 12,275.11-18,413.72-3,390.44

Finding the Fourth Proportional to 12,275.11, 18,413.72 and 3,390.44

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Solution

The fourth proportional to 12,275.11, 18,413.72 and 3,390.44 is: 5,085.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,275.11 : 18,413.72 = 3,390.44 : x
  2. Step 2: Convert to fraction form
    12,275.11/18,413.72 = 3,390.44/x
  3. Step 3: Cross multiply
    12,275.11x = 18,413.72 × 3,390.44
  4. Step 4: Simplify right side
    12,275.11x = 62,430,673.70
  5. Step 5: Solve for x
    x = 62,430,673.70/12,275.11
  6. Step 6: Final answer
    x = 5,085.96

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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.