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Finding the Fourth Proportional to 18,367.17, 27,550.14 and 7,978.92

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Solution

The fourth proportional to 18,367.17, 27,550.14 and 7,978.92 is: 11,968.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,367.17 : 27,550.14 = 7,978.92 : x
  2. Step 2: Convert to fraction form
    18,367.17/27,550.14 = 7,978.92/x
  3. Step 3: Cross multiply
    18,367.17x = 27,550.14 × 7,978.92
  4. Step 4: Simplify right side
    18,367.17x = 219,820,363.05
  5. Step 5: Solve for x
    x = 219,820,363.05/18,367.17
  6. Step 6: Final answer
    x = 11,968.11

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1.5x scale

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.