Home / 12,243.25-18,364.88-8,109.52

Finding the Fourth Proportional to 12,243.25, 18,364.88 and 8,109.52

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Solution

The fourth proportional to 12,243.25, 18,364.88 and 8,109.52 is: 12,164.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,243.25 : 18,364.88 = 8,109.52 : x
  2. Step 2: Convert to fraction form
    12,243.25/18,364.88 = 8,109.52/x
  3. Step 3: Cross multiply
    12,243.25x = 18,364.88 × 8,109.52
  4. Step 4: Simplify right side
    12,243.25x = 148,930,290.40
  5. Step 5: Solve for x
    x = 148,930,290.40/12,243.25
  6. Step 6: Final answer
    x = 12,164.28

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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.