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Finding the Fourth Proportional to 18,479,042.20, 27,718,563.30 and 18,479,042.20

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Solution

The fourth proportional to 18,479,042.20, 27,718,563.30 and 18,479,042.20 is: 27,718,563.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,479,042.20 : 27,718,563.30 = 18,479,042.20 : x
  2. Step 2: Convert to fraction form
    18,479,042.20/27,718,563.30 = 18,479,042.20/x
  3. Step 3: Cross multiply
    18,479,042.20x = 27,718,563.30 × 18,479,042.20
  4. Step 4: Simplify right side
    18,479,042.20x = 512,212,500,944,071.25
  5. Step 5: Solve for x
    x = 512,212,500,944,071.25/18,479,042.20
  6. Step 6: Final answer
    x = 27,718,563.30

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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.