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Finding the Fourth Proportional to 18,442.69, 27,664.13 and 4,591.69

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Solution

The fourth proportional to 18,442.69, 27,664.13 and 4,591.69 is: 6,887.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,442.69 : 27,664.13 = 4,591.69 : x
  2. Step 2: Convert to fraction form
    18,442.69/27,664.13 = 4,591.69/x
  3. Step 3: Cross multiply
    18,442.69x = 27,664.13 × 4,591.69
  4. Step 4: Simplify right side
    18,442.69x = 127,025,051.40
  5. Step 5: Solve for x
    x = 127,025,051.40/18,442.69
  6. Step 6: Final answer
    x = 6,887.56

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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.