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Finding the Fourth Proportional to 18,107.48, 27,121.08 and 13,916.64

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Solution

The fourth proportional to 18,107.48, 27,121.08 and 13,916.64 is: 20,844.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,107.48 : 27,121.08 = 13,916.64 : x
  2. Step 2: Convert to fraction form
    18,107.48/27,121.08 = 13,916.64/x
  3. Step 3: Cross multiply
    18,107.48x = 27,121.08 × 13,916.64
  4. Step 4: Simplify right side
    18,107.48x = 377,434,306.77
  5. Step 5: Solve for x
    x = 377,434,306.77/18,107.48
  6. Step 6: Final answer
    x = 20,844.11

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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.