Home / 18,787,493.38-28,172,357.61-7,278,352.42

Finding the Fourth Proportional to 18,787,493.38, 28,172,357.61 and 7,278,352.42

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Solution

The fourth proportional to 18,787,493.38, 28,172,357.61 and 7,278,352.42 is: 10,914,087.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,787,493.38 : 28,172,357.61 = 7,278,352.42 : x
  2. Step 2: Convert to fraction form
    18,787,493.38/28,172,357.61 = 7,278,352.42/x
  3. Step 3: Cross multiply
    18,787,493.38x = 28,172,357.61 × 7,278,352.42
  4. Step 4: Simplify right side
    18,787,493.38x = 205,048,347,081,026.28
  5. Step 5: Solve for x
    x = 205,048,347,081,026.28/18,787,493.38
  6. Step 6: Final answer
    x = 10,914,087.52

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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.