Home / 12,140,942.20-18,211,413.30-11,217,153.40

Finding the Fourth Proportional to 12,140,942.20, 18,211,413.30 and 11,217,153.40

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Solution

The fourth proportional to 12,140,942.20, 18,211,413.30 and 11,217,153.40 is: 16,825,730.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,140,942.20 : 18,211,413.30 = 11,217,153.40 : x
  2. Step 2: Convert to fraction form
    12,140,942.20/18,211,413.30 = 11,217,153.40/x
  3. Step 3: Cross multiply
    12,140,942.20x = 18,211,413.30 × 11,217,153.40
  4. Step 4: Simplify right side
    12,140,942.20x = 204,280,216,616,900.25
  5. Step 5: Solve for x
    x = 204,280,216,616,900.25/12,140,942.20
  6. Step 6: Final answer
    x = 16,825,730.10

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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.