Home / 12,809.08-19,214.04-5,413.78

Finding the Fourth Proportional to 12,809.08, 19,214.04 and 5,413.78

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Solution

The fourth proportional to 12,809.08, 19,214.04 and 5,413.78 is: 8,120.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,809.08 : 19,214.04 = 5,413.78 : x
  2. Step 2: Convert to fraction form
    12,809.08/19,214.04 = 5,413.78/x
  3. Step 3: Cross multiply
    12,809.08x = 19,214.04 × 5,413.78
  4. Step 4: Simplify right side
    12,809.08x = 104,020,585.47
  5. Step 5: Solve for x
    x = 104,020,585.47/12,809.08
  6. Step 6: Final answer
    x = 8,120.85

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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.