Home / 13,538.88-20,308.80-6,517.68

Finding the Fourth Proportional to 13,538.88, 20,308.80 and 6,517.68

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Solution

The fourth proportional to 13,538.88, 20,308.80 and 6,517.68 is: 9,776.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,538.88 : 20,308.80 = 6,517.68 : x
  2. Step 2: Convert to fraction form
    13,538.88/20,308.80 = 6,517.68/x
  3. Step 3: Cross multiply
    13,538.88x = 20,308.80 × 6,517.68
  4. Step 4: Simplify right side
    13,538.88x = 132,366,259.58
  5. Step 5: Solve for x
    x = 132,366,259.58/13,538.88
  6. Step 6: Final answer
    x = 9,776.75

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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.