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Finding the Fourth Proportional to 18,671.58, 27,997.65 and 5,522.18

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Solution

The fourth proportional to 18,671.58, 27,997.65 and 5,522.18 is: 8,280.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671.58 : 27,997.65 = 5,522.18 : x
  2. Step 2: Convert to fraction form
    18,671.58/27,997.65 = 5,522.18/x
  3. Step 3: Cross multiply
    18,671.58x = 27,997.65 × 5,522.18
  4. Step 4: Simplify right side
    18,671.58x = 154,607,922.89
  5. Step 5: Solve for x
    x = 154,607,922.89/18,671.58
  6. Step 6: Final answer
    x = 8,280.39

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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.