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Finding the Fourth Proportional to 18,563.78, 27,813.27 and 15,463.71

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Solution

The fourth proportional to 18,563.78, 27,813.27 and 15,463.71 is: 23,168.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,563.78 : 27,813.27 = 15,463.71 : x
  2. Step 2: Convert to fraction form
    18,563.78/27,813.27 = 15,463.71/x
  3. Step 3: Cross multiply
    18,563.78x = 27,813.27 × 15,463.71
  4. Step 4: Simplify right side
    18,563.78x = 430,096,399.42
  5. Step 5: Solve for x
    x = 430,096,399.42/18,563.78
  6. Step 6: Final answer
    x = 23,168.58

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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.