Home / 12,456.98-18,680.80-4,135.44

Finding the Fourth Proportional to 12,456.98, 18,680.80 and 4,135.44

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Solution

The fourth proportional to 12,456.98, 18,680.80 and 4,135.44 is: 6,201.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456.98 : 18,680.80 = 4,135.44 : x
  2. Step 2: Convert to fraction form
    12,456.98/18,680.80 = 4,135.44/x
  3. Step 3: Cross multiply
    12,456.98x = 18,680.80 × 4,135.44
  4. Step 4: Simplify right side
    12,456.98x = 77,253,327.55
  5. Step 5: Solve for x
    x = 77,253,327.55/12,456.98
  6. Step 6: Final answer
    x = 6,201.61

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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.