Home / 13,634.80-20,445.50-8,086.66

Finding the Fourth Proportional to 13,634.80, 20,445.50 and 8,086.66

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Solution

The fourth proportional to 13,634.80, 20,445.50 and 8,086.66 is: 12,126.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,634.80 : 20,445.50 = 8,086.66 : x
  2. Step 2: Convert to fraction form
    13,634.80/20,445.50 = 8,086.66/x
  3. Step 3: Cross multiply
    13,634.80x = 20,445.50 × 8,086.66
  4. Step 4: Simplify right side
    13,634.80x = 165,335,807.03
  5. Step 5: Solve for x
    x = 165,335,807.03/13,634.80
  6. Step 6: Final answer
    x = 12,126.02

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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.