Home / 18,835.62-28,257.99-5,687.20

Finding the Fourth Proportional to 18,835.62, 28,257.99 and 5,687.20

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Solution

The fourth proportional to 18,835.62, 28,257.99 and 5,687.20 is: 8,532.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,835.62 : 28,257.99 = 5,687.20 : x
  2. Step 2: Convert to fraction form
    18,835.62/28,257.99 = 5,687.20/x
  3. Step 3: Cross multiply
    18,835.62x = 28,257.99 × 5,687.20
  4. Step 4: Simplify right side
    18,835.62x = 160,708,840.73
  5. Step 5: Solve for x
    x = 160,708,840.73/18,835.62
  6. Step 6: Final answer
    x = 8,532.18

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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.