Home / 18,786.10-28,179.60-6,306.53

Finding the Fourth Proportional to 18,786.10, 28,179.60 and 6,306.53

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Solution

The fourth proportional to 18,786.10, 28,179.60 and 6,306.53 is: 9,459.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786.10 : 28,179.60 = 6,306.53 : x
  2. Step 2: Convert to fraction form
    18,786.10/28,179.60 = 6,306.53/x
  3. Step 3: Cross multiply
    18,786.10x = 28,179.60 × 6,306.53
  4. Step 4: Simplify right side
    18,786.10x = 177,715,492.79
  5. Step 5: Solve for x
    x = 177,715,492.79/18,786.10
  6. Step 6: Final answer
    x = 9,459.95

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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.