Home / 12,645,855.28-18,972,333.96-5,078,135.44

Finding the Fourth Proportional to 12,645,855.28, 18,972,333.96 and 5,078,135.44

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Solution

The fourth proportional to 12,645,855.28, 18,972,333.96 and 5,078,135.44 is: 7,618,629.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,645,855.28 : 18,972,333.96 = 5,078,135.44 : x
  2. Step 2: Convert to fraction form
    12,645,855.28/18,972,333.96 = 5,078,135.44/x
  3. Step 3: Cross multiply
    12,645,855.28x = 18,972,333.96 × 5,078,135.44
  4. Step 4: Simplify right side
    12,645,855.28x = 96,344,081,461,791.56
  5. Step 5: Solve for x
    x = 96,344,081,461,791.56/12,645,855.28
  6. Step 6: Final answer
    x = 7,618,629.13

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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.