Home / 12,585,645.20-18,878,413.92-3,487,716.80

Finding the Fourth Proportional to 12,585,645.20, 18,878,413.92 and 3,487,716.80

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Solution

The fourth proportional to 12,585,645.20, 18,878,413.92 and 3,487,716.80 is: 5,231,560.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,585,645.20 : 18,878,413.92 = 3,487,716.80 : x
  2. Step 2: Convert to fraction form
    12,585,645.20/18,878,413.92 = 3,487,716.80/x
  3. Step 3: Cross multiply
    12,585,645.20x = 18,878,413.92 × 3,487,716.80
  4. Step 4: Simplify right side
    12,585,645.20x = 65,842,561,386,137.86
  5. Step 5: Solve for x
    x = 65,842,561,386,137.86/12,585,645.20
  6. Step 6: Final answer
    x = 5,231,560.27

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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.