Home / 13,690.11-20,573.64-8,144.46

Finding the Fourth Proportional to 13,690.11, 20,573.64 and 8,144.46

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Solution

The fourth proportional to 13,690.11, 20,573.64 and 8,144.46 is: 12,239.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,690.11 : 20,573.64 = 8,144.46 : x
  2. Step 2: Convert to fraction form
    13,690.11/20,573.64 = 8,144.46/x
  3. Step 3: Cross multiply
    13,690.11x = 20,573.64 × 8,144.46
  4. Step 4: Simplify right side
    13,690.11x = 167,561,188.03
  5. Step 5: Solve for x
    x = 167,561,188.03/13,690.11
  6. Step 6: Final answer
    x = 12,239.58

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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.