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Finding the Fourth Proportional to 18,855.88, 28,283.90 and 6,376.02

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Solution

The fourth proportional to 18,855.88, 28,283.90 and 6,376.02 is: 9,564.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,855.88 : 28,283.90 = 6,376.02 : x
  2. Step 2: Convert to fraction form
    18,855.88/28,283.90 = 6,376.02/x
  3. Step 3: Cross multiply
    18,855.88x = 28,283.90 × 6,376.02
  4. Step 4: Simplify right side
    18,855.88x = 180,338,712.08
  5. Step 5: Solve for x
    x = 180,338,712.08/18,855.88
  6. Step 6: Final answer
    x = 9,564.06

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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.