Home / 18,774.30-28,161.45-7,682.57

Finding the Fourth Proportional to 18,774.30, 28,161.45 and 7,682.57

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Solution

The fourth proportional to 18,774.30, 28,161.45 and 7,682.57 is: 11,523.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,774.30 : 28,161.45 = 7,682.57 : x
  2. Step 2: Convert to fraction form
    18,774.30/28,161.45 = 7,682.57/x
  3. Step 3: Cross multiply
    18,774.30x = 28,161.45 × 7,682.57
  4. Step 4: Simplify right side
    18,774.30x = 216,352,170.12
  5. Step 5: Solve for x
    x = 216,352,170.12/18,774.30
  6. Step 6: Final answer
    x = 11,523.85

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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.