Home / 13,677.82-20,508.90-8,135.04

Finding the Fourth Proportional to 13,677.82, 20,508.90 and 8,135.04

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Solution

The fourth proportional to 13,677.82, 20,508.90 and 8,135.04 is: 12,197.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,677.82 : 20,508.90 = 8,135.04 : x
  2. Step 2: Convert to fraction form
    13,677.82/20,508.90 = 8,135.04/x
  3. Step 3: Cross multiply
    13,677.82x = 20,508.90 × 8,135.04
  4. Step 4: Simplify right side
    13,677.82x = 166,840,721.86
  5. Step 5: Solve for x
    x = 166,840,721.86/13,677.82
  6. Step 6: Final answer
    x = 12,197.90

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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.