Home / 12,458,516.20-18,693,023.10-6,782,813.80

Finding the Fourth Proportional to 12,458,516.20, 18,693,023.10 and 6,782,813.80

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Solution

The fourth proportional to 12,458,516.20, 18,693,023.10 and 6,782,813.80 is: 10,177,078.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458,516.20 : 18,693,023.10 = 6,782,813.80 : x
  2. Step 2: Convert to fraction form
    12,458,516.20/18,693,023.10 = 6,782,813.80/x
  3. Step 3: Cross multiply
    12,458,516.20x = 18,693,023.10 × 6,782,813.80
  4. Step 4: Simplify right side
    12,458,516.20x = 126,791,295,046,398.78
  5. Step 5: Solve for x
    x = 126,791,295,046,398.78/12,458,516.20
  6. Step 6: Final answer
    x = 10,177,078.31

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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.