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Finding the Fourth Proportional to 18,420.82, 27,598.18 and 11,194.82

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Solution

The fourth proportional to 18,420.82, 27,598.18 and 11,194.82 is: 16,772.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,420.82 : 27,598.18 = 11,194.82 : x
  2. Step 2: Convert to fraction form
    18,420.82/27,598.18 = 11,194.82/x
  3. Step 3: Cross multiply
    18,420.82x = 27,598.18 × 11,194.82
  4. Step 4: Simplify right side
    18,420.82x = 308,956,657.43
  5. Step 5: Solve for x
    x = 308,956,657.43/18,420.82
  6. Step 6: Final answer
    x = 16,772.14

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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.