Home / 13,728,404.79-18,940,506.03-7,843,816.67

Finding the Fourth Proportional to 13,728,404.79, 18,940,506.03 and 7,843,816.67

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Solution

The fourth proportional to 13,728,404.79, 18,940,506.03 and 7,843,816.67 is: 10,821,785.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728,404.79 : 18,940,506.03 = 7,843,816.67 : x
  2. Step 2: Convert to fraction form
    13,728,404.79/18,940,506.03 = 7,843,816.67/x
  3. Step 3: Cross multiply
    13,728,404.79x = 18,940,506.03 × 7,843,816.67
  4. Step 4: Simplify right side
    13,728,404.79x = 148,565,856,841,647
  5. Step 5: Solve for x
    x = 148,565,856,841,647/13,728,404.79
  6. Step 6: Final answer
    x = 10,821,785.86

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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.