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Finding the Fourth Proportional to 18,087,662.10, 27,131,493.15 and 10,913,208.60

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Solution

The fourth proportional to 18,087,662.10, 27,131,493.15 and 10,913,208.60 is: 16,369,812.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,087,662.10 : 27,131,493.15 = 10,913,208.60 : x
  2. Step 2: Convert to fraction form
    18,087,662.10/27,131,493.15 = 10,913,208.60/x
  3. Step 3: Cross multiply
    18,087,662.10x = 27,131,493.15 × 10,913,208.60
  4. Step 4: Simplify right side
    18,087,662.10x = 296,091,644,375,421.06
  5. Step 5: Solve for x
    x = 296,091,644,375,421.06/18,087,662.10
  6. Step 6: Final answer
    x = 16,369,812.90

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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.