Home / 12,455,629.60-18,679,945.20-3,938,576.80

Finding the Fourth Proportional to 12,455,629.60, 18,679,945.20 and 3,938,576.80

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Solution

The fourth proportional to 12,455,629.60, 18,679,945.20 and 3,938,576.80 is: 5,906,758.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455,629.60 : 18,679,945.20 = 3,938,576.80 : x
  2. Step 2: Convert to fraction form
    12,455,629.60/18,679,945.20 = 3,938,576.80/x
  3. Step 3: Cross multiply
    12,455,629.60x = 18,679,945.20 × 3,938,576.80
  4. Step 4: Simplify right side
    12,455,629.60x = 73,572,398,789,991.36
  5. Step 5: Solve for x
    x = 73,572,398,789,991.36/12,455,629.60
  6. Step 6: Final answer
    x = 5,906,758.72

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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.