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Finding the Fourth Proportional to 18,068.80, 27,114 and 6,391.84

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Solution

The fourth proportional to 18,068.80, 27,114 and 6,391.84 is: 9,591.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,068.80 : 27,114 = 6,391.84 : x
  2. Step 2: Convert to fraction form
    18,068.80/27,114 = 6,391.84/x
  3. Step 3: Cross multiply
    18,068.80x = 27,114 × 6,391.84
  4. Step 4: Simplify right side
    18,068.80x = 173,308,349.76
  5. Step 5: Solve for x
    x = 173,308,349.76/18,068.80
  6. Step 6: Final answer
    x = 9,591.58

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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.