Home / 18,764.90-28,138.26-7,667.18

Finding the Fourth Proportional to 18,764.90, 28,138.26 and 7,667.18

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Solution

The fourth proportional to 18,764.90, 28,138.26 and 7,667.18 is: 11,497.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,764.90 : 28,138.26 = 7,667.18 : x
  2. Step 2: Convert to fraction form
    18,764.90/28,138.26 = 7,667.18/x
  3. Step 3: Cross multiply
    18,764.90x = 28,138.26 × 7,667.18
  4. Step 4: Simplify right side
    18,764.90x = 215,741,104.31
  5. Step 5: Solve for x
    x = 215,741,104.31/18,764.90
  6. Step 6: Final answer
    x = 11,497.06

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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.