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Finding the Fourth Proportional to 18,451,842.30, 27,677,763.45 and 12,081,743.10

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Solution

The fourth proportional to 18,451,842.30, 27,677,763.45 and 12,081,743.10 is: 18,122,614.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,451,842.30 : 27,677,763.45 = 12,081,743.10 : x
  2. Step 2: Convert to fraction form
    18,451,842.30/27,677,763.45 = 12,081,743.10/x
  3. Step 3: Cross multiply
    18,451,842.30x = 27,677,763.45 × 12,081,743.10
  4. Step 4: Simplify right side
    18,451,842.30x = 334,395,627,585,469.69
  5. Step 5: Solve for x
    x = 334,395,627,585,469.69/18,451,842.30
  6. Step 6: Final answer
    x = 18,122,614.65

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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.