Home / 11,991.10-17,986.65-11,116.30

Finding the Fourth Proportional to 11,991.10, 17,986.65 and 11,116.30

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Solution

The fourth proportional to 11,991.10, 17,986.65 and 11,116.30 is: 16,674.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,991.10 : 17,986.65 = 11,116.30 : x
  2. Step 2: Convert to fraction form
    11,991.10/17,986.65 = 11,116.30/x
  3. Step 3: Cross multiply
    11,991.10x = 17,986.65 × 11,116.30
  4. Step 4: Simplify right side
    11,991.10x = 199,944,997.40
  5. Step 5: Solve for x
    x = 199,944,997.40/11,991.10
  6. Step 6: Final answer
    x = 16,674.45

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Similar ratio
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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.