Home / 13,947,321.22-20,859,792.78-12,421,078.72

Finding the Fourth Proportional to 13,947,321.22, 20,859,792.78 and 12,421,078.72

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Solution

The fourth proportional to 13,947,321.22, 20,859,792.78 and 12,421,078.72 is: 18,577,124.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,947,321.22 : 20,859,792.78 = 12,421,078.72 : x
  2. Step 2: Convert to fraction form
    13,947,321.22/20,859,792.78 = 12,421,078.72/x
  3. Step 3: Cross multiply
    13,947,321.22x = 20,859,792.78 × 12,421,078.72
  4. Step 4: Simplify right side
    13,947,321.22x = 259,101,128,203,267.66
  5. Step 5: Solve for x
    x = 259,101,128,203,267.66/13,947,321.22
  6. Step 6: Final answer
    x = 18,577,124.89

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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.