Home / 13,413.70-20,112.55-8,223.30

Finding the Fourth Proportional to 13,413.70, 20,112.55 and 8,223.30

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Solution

The fourth proportional to 13,413.70, 20,112.55 and 8,223.30 is: 12,330.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,413.70 : 20,112.55 = 8,223.30 : x
  2. Step 2: Convert to fraction form
    13,413.70/20,112.55 = 8,223.30/x
  3. Step 3: Cross multiply
    13,413.70x = 20,112.55 × 8,223.30
  4. Step 4: Simplify right side
    13,413.70x = 165,391,532.42
  5. Step 5: Solve for x
    x = 165,391,532.42/13,413.70
  6. Step 6: Final answer
    x = 12,330.05

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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.