Home / 13,394.31-20,080.13-8,189.25

Finding the Fourth Proportional to 13,394.31, 20,080.13 and 8,189.25

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Solution

The fourth proportional to 13,394.31, 20,080.13 and 8,189.25 is: 12,276.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,394.31 : 20,080.13 = 8,189.25 : x
  2. Step 2: Convert to fraction form
    13,394.31/20,080.13 = 8,189.25/x
  3. Step 3: Cross multiply
    13,394.31x = 20,080.13 × 8,189.25
  4. Step 4: Simplify right side
    13,394.31x = 164,441,163.66
  5. Step 5: Solve for x
    x = 164,441,163.66/13,394.31
  6. Step 6: Final answer
    x = 12,276.94

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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.