Home / 13,289,974.80-18,340,164.68-7,178,403.30

Finding the Fourth Proportional to 13,289,974.80, 18,340,164.68 and 7,178,403.30

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Solution

The fourth proportional to 13,289,974.80, 18,340,164.68 and 7,178,403.30 is: 9,906,196.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289,974.80 : 18,340,164.68 = 7,178,403.30 : x
  2. Step 2: Convert to fraction form
    13,289,974.80/18,340,164.68 = 7,178,403.30/x
  3. Step 3: Cross multiply
    13,289,974.80x = 18,340,164.68 × 7,178,403.30
  4. Step 4: Simplify right side
    13,289,974.80x = 131,653,098,661,455.44
  5. Step 5: Solve for x
    x = 131,653,098,661,455.44/13,289,974.80
  6. Step 6: Final answer
    x = 9,906,196.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.