Home / 18,660.15-28,001.69-7,413.53

Finding the Fourth Proportional to 18,660.15, 28,001.69 and 7,413.53

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Solution

The fourth proportional to 18,660.15, 28,001.69 and 7,413.53 is: 11,124.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,660.15 : 28,001.69 = 7,413.53 : x
  2. Step 2: Convert to fraction form
    18,660.15/28,001.69 = 7,413.53/x
  3. Step 3: Cross multiply
    18,660.15x = 28,001.69 × 7,413.53
  4. Step 4: Simplify right side
    18,660.15x = 207,591,191.79
  5. Step 5: Solve for x
    x = 207,591,191.79/18,660.15
  6. Step 6: Final answer
    x = 11,124.84

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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.