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Finding the Fourth Proportional to 18,297,909.28, 27,455,241.64 and 7,926,299.61

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Solution

The fourth proportional to 18,297,909.28, 27,455,241.64 and 7,926,299.61 is: 11,893,078.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,297,909.28 : 27,455,241.64 = 7,926,299.61 : x
  2. Step 2: Convert to fraction form
    18,297,909.28/27,455,241.64 = 7,926,299.61/x
  3. Step 3: Cross multiply
    18,297,909.28x = 27,455,241.64 × 7,926,299.61
  4. Step 4: Simplify right side
    18,297,909.28x = 217,618,471,103,587.78
  5. Step 5: Solve for x
    x = 217,618,471,103,587.78/18,297,909.28
  6. Step 6: Final answer
    x = 11,893,078.48

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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.