Home / 20,515,168.80-28,302,037.20-12,361,773.60

Finding the Fourth Proportional to 20,515,168.80, 28,302,037.20 and 12,361,773.60

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Solution

The fourth proportional to 20,515,168.80, 28,302,037.20 and 12,361,773.60 is: 17,053,887.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515,168.80 : 28,302,037.20 = 12,361,773.60 : x
  2. Step 2: Convert to fraction form
    20,515,168.80/28,302,037.20 = 12,361,773.60/x
  3. Step 3: Cross multiply
    20,515,168.80x = 28,302,037.20 × 12,361,773.60
  4. Step 4: Simplify right side
    20,515,168.80x = 349,863,376,285,177.88
  5. Step 5: Solve for x
    x = 349,863,376,285,177.88/20,515,168.80
  6. Step 6: Final answer
    x = 17,053,887.28

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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.