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Finding the Fourth Proportional to 18,636, 27,958.32 and 6,324

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Solution

The fourth proportional to 18,636, 27,958.32 and 6,324 is: 9,487.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,636 : 27,958.32 = 6,324 : x
  2. Step 2: Convert to fraction form
    18,636/27,958.32 = 6,324/x
  3. Step 3: Cross multiply
    18,636x = 27,958.32 × 6,324
  4. Step 4: Simplify right side
    18,636x = 176,808,415.68
  5. Step 5: Solve for x
    x = 176,808,415.68/18,636
  6. Step 6: Final answer
    x = 9,487.47

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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.