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Finding the Fourth Proportional to 18,310.72, 27,398.04 and 10,919.20

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Solution

The fourth proportional to 18,310.72, 27,398.04 and 10,919.20 is: 16,338.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,310.72 : 27,398.04 = 10,919.20 : x
  2. Step 2: Convert to fraction form
    18,310.72/27,398.04 = 10,919.20/x
  3. Step 3: Cross multiply
    18,310.72x = 27,398.04 × 10,919.20
  4. Step 4: Simplify right side
    18,310.72x = 299,164,678.37
  5. Step 5: Solve for x
    x = 299,164,678.37/18,310.72
  6. Step 6: Final answer
    x = 16,338.23

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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.