Home / 12,015.16-18,022.80-11,997.88

Finding the Fourth Proportional to 12,015.16, 18,022.80 and 11,997.88

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Solution

The fourth proportional to 12,015.16, 18,022.80 and 11,997.88 is: 17,996.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,015.16 : 18,022.80 = 11,997.88 : x
  2. Step 2: Convert to fraction form
    12,015.16/18,022.80 = 11,997.88/x
  3. Step 3: Cross multiply
    12,015.16x = 18,022.80 × 11,997.88
  4. Step 4: Simplify right side
    12,015.16x = 216,235,391.66
  5. Step 5: Solve for x
    x = 216,235,391.66/12,015.16
  6. Step 6: Final answer
    x = 17,996.88

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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.