Home / 12,135.42-18,107.96-11,392.38

Finding the Fourth Proportional to 12,135.42, 18,107.96 and 11,392.38

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Solution

The fourth proportional to 12,135.42, 18,107.96 and 11,392.38 is: 16,999.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,135.42 : 18,107.96 = 11,392.38 : x
  2. Step 2: Convert to fraction form
    12,135.42/18,107.96 = 11,392.38/x
  3. Step 3: Cross multiply
    12,135.42x = 18,107.96 × 11,392.38
  4. Step 4: Simplify right side
    12,135.42x = 206,292,704.38
  5. Step 5: Solve for x
    x = 206,292,704.38/12,135.42
  6. Step 6: Final answer
    x = 16,999.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.