Home / 12,112.66-18,170.61-11,895.58

Finding the Fourth Proportional to 12,112.66, 18,170.61 and 11,895.58

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Solution

The fourth proportional to 12,112.66, 18,170.61 and 11,895.58 is: 17,844.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,112.66 : 18,170.61 = 11,895.58 : x
  2. Step 2: Convert to fraction form
    12,112.66/18,170.61 = 11,895.58/x
  3. Step 3: Cross multiply
    12,112.66x = 18,170.61 × 11,895.58
  4. Step 4: Simplify right side
    12,112.66x = 216,149,944.90
  5. Step 5: Solve for x
    x = 216,149,944.90/12,112.66
  6. Step 6: Final answer
    x = 17,844.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.