Home / 15,413.28-21,270.24-8,698.56

Finding the Fourth Proportional to 15,413.28, 21,270.24 and 8,698.56

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Solution

The fourth proportional to 15,413.28, 21,270.24 and 8,698.56 is: 12,003.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,413.28 : 21,270.24 = 8,698.56 : x
  2. Step 2: Convert to fraction form
    15,413.28/21,270.24 = 8,698.56/x
  3. Step 3: Cross multiply
    15,413.28x = 21,270.24 × 8,698.56
  4. Step 4: Simplify right side
    15,413.28x = 185,020,458.85
  5. Step 5: Solve for x
    x = 185,020,458.85/15,413.28
  6. Step 6: Final answer
    x = 12,003.96

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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.