Home / 12,126.92-16,734.97-6,821.72

Finding the Fourth Proportional to 12,126.92, 16,734.97 and 6,821.72

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Solution

The fourth proportional to 12,126.92, 16,734.97 and 6,821.72 is: 9,413.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.92 : 16,734.97 = 6,821.72 : x
  2. Step 2: Convert to fraction form
    12,126.92/16,734.97 = 6,821.72/x
  3. Step 3: Cross multiply
    12,126.92x = 16,734.97 × 6,821.72
  4. Step 4: Simplify right side
    12,126.92x = 114,161,267.16
  5. Step 5: Solve for x
    x = 114,161,267.16/12,126.92
  6. Step 6: Final answer
    x = 9,413.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.