Home / 12,178.76-18,267.88-3,413.44

Finding the Fourth Proportional to 12,178.76, 18,267.88 and 3,413.44

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Solution

The fourth proportional to 12,178.76, 18,267.88 and 3,413.44 is: 5,120.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,178.76 : 18,267.88 = 3,413.44 : x
  2. Step 2: Convert to fraction form
    12,178.76/18,267.88 = 3,413.44/x
  3. Step 3: Cross multiply
    12,178.76x = 18,267.88 × 3,413.44
  4. Step 4: Simplify right side
    12,178.76x = 62,356,333.01
  5. Step 5: Solve for x
    x = 62,356,333.01/12,178.76
  6. Step 6: Final answer
    x = 5,120.09

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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.