Home / 12,445.85-18,669.58-4,131.61

Finding the Fourth Proportional to 12,445.85, 18,669.58 and 4,131.61

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Solution

The fourth proportional to 12,445.85, 18,669.58 and 4,131.61 is: 6,197.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,445.85 : 18,669.58 = 4,131.61 : x
  2. Step 2: Convert to fraction form
    12,445.85/18,669.58 = 4,131.61/x
  3. Step 3: Cross multiply
    12,445.85x = 18,669.58 × 4,131.61
  4. Step 4: Simplify right side
    12,445.85x = 77,135,360.61
  5. Step 5: Solve for x
    x = 77,135,360.61/12,445.85
  6. Step 6: Final answer
    x = 6,197.68

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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.