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Finding the Fourth Proportional to 18,614.64, 27,912.12 and 10,715.52

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Solution

The fourth proportional to 18,614.64, 27,912.12 and 10,715.52 is: 16,067.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,614.64 : 27,912.12 = 10,715.52 : x
  2. Step 2: Convert to fraction form
    18,614.64/27,912.12 = 10,715.52/x
  3. Step 3: Cross multiply
    18,614.64x = 27,912.12 × 10,715.52
  4. Step 4: Simplify right side
    18,614.64x = 299,092,880.10
  5. Step 5: Solve for x
    x = 299,092,880.10/18,614.64
  6. Step 6: Final answer
    x = 16,067.62

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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.