Home / 18,758.14-28,126.82-7,672.60

Finding the Fourth Proportional to 18,758.14, 28,126.82 and 7,672.60

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Solution

The fourth proportional to 18,758.14, 28,126.82 and 7,672.60 is: 11,504.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,758.14 : 28,126.82 = 7,672.60 : x
  2. Step 2: Convert to fraction form
    18,758.14/28,126.82 = 7,672.60/x
  3. Step 3: Cross multiply
    18,758.14x = 28,126.82 × 7,672.60
  4. Step 4: Simplify right side
    18,758.14x = 215,805,839.13
  5. Step 5: Solve for x
    x = 215,805,839.13/18,758.14
  6. Step 6: Final answer
    x = 11,504.65

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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.