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Finding the Fourth Proportional to 18,636.66, 27,967.95 and 12,046.50

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Solution

The fourth proportional to 18,636.66, 27,967.95 and 12,046.50 is: 18,078.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,636.66 : 27,967.95 = 12,046.50 : x
  2. Step 2: Convert to fraction form
    18,636.66/27,967.95 = 12,046.50/x
  3. Step 3: Cross multiply
    18,636.66x = 27,967.95 × 12,046.50
  4. Step 4: Simplify right side
    18,636.66x = 336,915,909.68
  5. Step 5: Solve for x
    x = 336,915,909.68/18,636.66
  6. Step 6: Final answer
    x = 18,078.13

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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.