Home / 15,149.42-20,886.66-12,413.78

Finding the Fourth Proportional to 15,149.42, 20,886.66 and 12,413.78

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Solution

The fourth proportional to 15,149.42, 20,886.66 and 12,413.78 is: 17,115.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,149.42 : 20,886.66 = 12,413.78 : x
  2. Step 2: Convert to fraction form
    15,149.42/20,886.66 = 12,413.78/x
  3. Step 3: Cross multiply
    15,149.42x = 20,886.66 × 12,413.78
  4. Step 4: Simplify right side
    15,149.42x = 259,282,419.48
  5. Step 5: Solve for x
    x = 259,282,419.48/15,149.42
  6. Step 6: Final answer
    x = 17,115.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.