Home / 18,817.40-28,187.82-12,223.64

Finding the Fourth Proportional to 18,817.40, 28,187.82 and 12,223.64

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Solution

The fourth proportional to 18,817.40, 28,187.82 and 12,223.64 is: 18,310.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,817.40 : 28,187.82 = 12,223.64 : x
  2. Step 2: Convert to fraction form
    18,817.40/28,187.82 = 12,223.64/x
  3. Step 3: Cross multiply
    18,817.40x = 28,187.82 × 12,223.64
  4. Step 4: Simplify right side
    18,817.40x = 344,557,764.06
  5. Step 5: Solve for x
    x = 344,557,764.06/18,817.40
  6. Step 6: Final answer
    x = 18,310.59

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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.