Home / 12,780.42-19,161.05-8,608.73

Finding the Fourth Proportional to 12,780.42, 19,161.05 and 8,608.73

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Solution

The fourth proportional to 12,780.42, 19,161.05 and 8,608.73 is: 12,906.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,780.42 : 19,161.05 = 8,608.73 : x
  2. Step 2: Convert to fraction form
    12,780.42/19,161.05 = 8,608.73/x
  3. Step 3: Cross multiply
    12,780.42x = 19,161.05 × 8,608.73
  4. Step 4: Simplify right side
    12,780.42x = 164,952,167.12
  5. Step 5: Solve for x
    x = 164,952,167.12/12,780.42
  6. Step 6: Final answer
    x = 12,906.63

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1.5x scale

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.