Home / 20,942.18-31,413.21-8,462.06

Finding the Fourth Proportional to 20,942.18, 31,413.21 and 8,462.06

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Solution

The fourth proportional to 20,942.18, 31,413.21 and 8,462.06 is: 12,693.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,942.18 : 31,413.21 = 8,462.06 : x
  2. Step 2: Convert to fraction form
    20,942.18/31,413.21 = 8,462.06/x
  3. Step 3: Cross multiply
    20,942.18x = 31,413.21 × 8,462.06
  4. Step 4: Simplify right side
    20,942.18x = 265,820,546.35
  5. Step 5: Solve for x
    x = 265,820,546.35/20,942.18
  6. Step 6: Final answer
    x = 12,693.07

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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.