Home / 12,146.21-16,761.42-6,840.90

Finding the Fourth Proportional to 12,146.21, 16,761.42 and 6,840.90

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Solution

The fourth proportional to 12,146.21, 16,761.42 and 6,840.90 is: 9,440.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,146.21 : 16,761.42 = 6,840.90 : x
  2. Step 2: Convert to fraction form
    12,146.21/16,761.42 = 6,840.90/x
  3. Step 3: Cross multiply
    12,146.21x = 16,761.42 × 6,840.90
  4. Step 4: Simplify right side
    12,146.21x = 114,663,198.08
  5. Step 5: Solve for x
    x = 114,663,198.08/12,146.21
  6. Step 6: Final answer
    x = 9,440.25

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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.