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Finding the Fourth Proportional to 13,752,801.20, 20,629,201.80 and 12,477,342.80

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Solution

The fourth proportional to 13,752,801.20, 20,629,201.80 and 12,477,342.80 is: 18,716,014.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,752,801.20 : 20,629,201.80 = 12,477,342.80 : x
  2. Step 2: Convert to fraction form
    13,752,801.20/20,629,201.80 = 12,477,342.80/x
  3. Step 3: Cross multiply
    13,752,801.20x = 20,629,201.80 × 12,477,342.80
  4. Step 4: Simplify right side
    13,752,801.20x = 257,397,622,548,977.06
  5. Step 5: Solve for x
    x = 257,397,622,548,977.06/13,752,801.20
  6. Step 6: Final answer
    x = 18,716,014.20

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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.