Home / 12,126.31-16,734.20-6,821.16

Finding the Fourth Proportional to 12,126.31, 16,734.20 and 6,821.16

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Solution

The fourth proportional to 12,126.31, 16,734.20 and 6,821.16 is: 9,413.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.31 : 16,734.20 = 6,821.16 : x
  2. Step 2: Convert to fraction form
    12,126.31/16,734.20 = 6,821.16/x
  3. Step 3: Cross multiply
    12,126.31x = 16,734.20 × 6,821.16
  4. Step 4: Simplify right side
    12,126.31x = 114,146,652.94
  5. Step 5: Solve for x
    x = 114,146,652.94/12,126.31
  6. Step 6: Final answer
    x = 9,413.14

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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.