Home / 20,980.14-31,474.68-6,941.22

Finding the Fourth Proportional to 20,980.14, 31,474.68 and 6,941.22

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Solution

The fourth proportional to 20,980.14, 31,474.68 and 6,941.22 is: 10,413.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,980.14 : 31,474.68 = 6,941.22 : x
  2. Step 2: Convert to fraction form
    20,980.14/31,474.68 = 6,941.22/x
  3. Step 3: Cross multiply
    20,980.14x = 31,474.68 × 6,941.22
  4. Step 4: Simplify right side
    20,980.14x = 218,472,678.31
  5. Step 5: Solve for x
    x = 218,472,678.31/20,980.14
  6. Step 6: Final answer
    x = 10,413.31

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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.