Home / 13,685.26-20,519.70-6,651.44

Finding the Fourth Proportional to 13,685.26, 20,519.70 and 6,651.44

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Solution

The fourth proportional to 13,685.26, 20,519.70 and 6,651.44 is: 9,973.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,685.26 : 20,519.70 = 6,651.44 : x
  2. Step 2: Convert to fraction form
    13,685.26/20,519.70 = 6,651.44/x
  3. Step 3: Cross multiply
    13,685.26x = 20,519.70 × 6,651.44
  4. Step 4: Simplify right side
    13,685.26x = 136,485,553.37
  5. Step 5: Solve for x
    x = 136,485,553.37/13,685.26
  6. Step 6: Final answer
    x = 9,973.18

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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.