Home / 13,247,318.78-18,278,619.92-7,739,629.92

Finding the Fourth Proportional to 13,247,318.78, 18,278,619.92 and 7,739,629.92

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Solution

The fourth proportional to 13,247,318.78, 18,278,619.92 and 7,739,629.92 is: 10,679,123.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,247,318.78 : 18,278,619.92 = 7,739,629.92 : x
  2. Step 2: Convert to fraction form
    13,247,318.78/18,278,619.92 = 7,739,629.92/x
  3. Step 3: Cross multiply
    13,247,318.78x = 18,278,619.92 × 7,739,629.92
  4. Step 4: Simplify right side
    13,247,318.78x = 141,469,753,590,441.84
  5. Step 5: Solve for x
    x = 141,469,753,590,441.84/13,247,318.78
  6. Step 6: Final answer
    x = 10,679,123.53

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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.