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Finding the Fourth Proportional to 18,454.87, 27,682.43 and 7,916.03

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Solution

The fourth proportional to 18,454.87, 27,682.43 and 7,916.03 is: 11,874.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,454.87 : 27,682.43 = 7,916.03 : x
  2. Step 2: Convert to fraction form
    18,454.87/27,682.43 = 7,916.03/x
  3. Step 3: Cross multiply
    18,454.87x = 27,682.43 × 7,916.03
  4. Step 4: Simplify right side
    18,454.87x = 219,134,872.17
  5. Step 5: Solve for x
    x = 219,134,872.17/18,454.87
  6. Step 6: Final answer
    x = 11,874.09

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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.