Home / 12,286.09-16,943.56-9,107.31

Finding the Fourth Proportional to 12,286.09, 16,943.56 and 9,107.31

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Solution

The fourth proportional to 12,286.09, 16,943.56 and 9,107.31 is: 12,559.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,286.09 : 16,943.56 = 9,107.31 : x
  2. Step 2: Convert to fraction form
    12,286.09/16,943.56 = 9,107.31/x
  3. Step 3: Cross multiply
    12,286.09x = 16,943.56 × 9,107.31
  4. Step 4: Simplify right side
    12,286.09x = 154,310,176.85
  5. Step 5: Solve for x
    x = 154,310,176.85/12,286.09
  6. Step 6: Final answer
    x = 12,559.75

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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.