Home / 18,131.85-27,228.45-11,817.45

Finding the Fourth Proportional to 18,131.85, 27,228.45 and 11,817.45

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Solution

The fourth proportional to 18,131.85, 27,228.45 and 11,817.45 is: 17,746.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,131.85 : 27,228.45 = 11,817.45 : x
  2. Step 2: Convert to fraction form
    18,131.85/27,228.45 = 11,817.45/x
  3. Step 3: Cross multiply
    18,131.85x = 27,228.45 × 11,817.45
  4. Step 4: Simplify right side
    18,131.85x = 321,770,867.64
  5. Step 5: Solve for x
    x = 321,770,867.64/18,131.85
  6. Step 6: Final answer
    x = 17,746.17

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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.