Home / 12,131.10-16,740.96-6,826

Finding the Fourth Proportional to 12,131.10, 16,740.96 and 6,826

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Solution

The fourth proportional to 12,131.10, 16,740.96 and 6,826 is: 9,419.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,131.10 : 16,740.96 = 6,826 : x
  2. Step 2: Convert to fraction form
    12,131.10/16,740.96 = 6,826/x
  3. Step 3: Cross multiply
    12,131.10x = 16,740.96 × 6,826
  4. Step 4: Simplify right side
    12,131.10x = 114,273,792.96
  5. Step 5: Solve for x
    x = 114,273,792.96/12,131.10
  6. Step 6: Final answer
    x = 9,419.90

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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.