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Finding the Fourth Proportional to 10,413.65, 15,620.45 and 3,393.65

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Solution

The fourth proportional to 10,413.65, 15,620.45 and 3,393.65 is: 5,090.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,413.65 : 15,620.45 = 3,393.65 : x
  2. Step 2: Convert to fraction form
    10,413.65/15,620.45 = 3,393.65/x
  3. Step 3: Cross multiply
    10,413.65x = 15,620.45 × 3,393.65
  4. Step 4: Simplify right side
    10,413.65x = 53,010,245.07
  5. Step 5: Solve for x
    x = 53,010,245.07/10,413.65
  6. Step 6: Final answer
    x = 5,090.46

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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.