Home / 10,413.20-15,619.80-3,487.70

Finding the Fourth Proportional to 10,413.20, 15,619.80 and 3,487.70

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Solution

The fourth proportional to 10,413.20, 15,619.80 and 3,487.70 is: 5,231.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,413.20 : 15,619.80 = 3,487.70 : x
  2. Step 2: Convert to fraction form
    10,413.20/15,619.80 = 3,487.70/x
  3. Step 3: Cross multiply
    10,413.20x = 15,619.80 × 3,487.70
  4. Step 4: Simplify right side
    10,413.20x = 54,477,176.46
  5. Step 5: Solve for x
    x = 54,477,176.46/10,413.20
  6. Step 6: Final answer
    x = 5,231.55

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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.