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Finding the Fourth Proportional to 9,413.70, 14,120.55 and 8,879.10

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Solution

The fourth proportional to 9,413.70, 14,120.55 and 8,879.10 is: 13,318.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,413.70 : 14,120.55 = 8,879.10 : x
  2. Step 2: Convert to fraction form
    9,413.70/14,120.55 = 8,879.10/x
  3. Step 3: Cross multiply
    9,413.70x = 14,120.55 × 8,879.10
  4. Step 4: Simplify right side
    9,413.70x = 125,377,775.51
  5. Step 5: Solve for x
    x = 125,377,775.51/9,413.70
  6. Step 6: Final answer
    x = 13,318.65

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Similar ratio
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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.