Home / 11,169.69-15,413.25-6,389.47

Finding the Fourth Proportional to 11,169.69, 15,413.25 and 6,389.47

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Solution

The fourth proportional to 11,169.69, 15,413.25 and 6,389.47 is: 8,816.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,169.69 : 15,413.25 = 6,389.47 : x
  2. Step 2: Convert to fraction form
    11,169.69/15,413.25 = 6,389.47/x
  3. Step 3: Cross multiply
    11,169.69x = 15,413.25 × 6,389.47
  4. Step 4: Simplify right side
    11,169.69x = 98,482,498.48
  5. Step 5: Solve for x
    x = 98,482,498.48/11,169.69
  6. Step 6: Final answer
    x = 8,816.94

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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.