Home / 20,986.30-31,472.77-6,943.70

Finding the Fourth Proportional to 20,986.30, 31,472.77 and 6,943.70

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Solution

The fourth proportional to 20,986.30, 31,472.77 and 6,943.70 is: 10,413.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,986.30 : 31,472.77 = 6,943.70 : x
  2. Step 2: Convert to fraction form
    20,986.30/31,472.77 = 6,943.70/x
  3. Step 3: Cross multiply
    20,986.30x = 31,472.77 × 6,943.70
  4. Step 4: Simplify right side
    20,986.30x = 218,537,473.05
  5. Step 5: Solve for x
    x = 218,537,473.05/20,986.30
  6. Step 6: Final answer
    x = 10,413.34

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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.