Home / 13,849.12-20,757.12-8,218.90

Finding the Fourth Proportional to 13,849.12, 20,757.12 and 8,218.90

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Solution

The fourth proportional to 13,849.12, 20,757.12 and 8,218.90 is: 12,318.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,849.12 : 20,757.12 = 8,218.90 : x
  2. Step 2: Convert to fraction form
    13,849.12/20,757.12 = 8,218.90/x
  3. Step 3: Cross multiply
    13,849.12x = 20,757.12 × 8,218.90
  4. Step 4: Simplify right side
    13,849.12x = 170,600,693.57
  5. Step 5: Solve for x
    x = 170,600,693.57/13,849.12
  6. Step 6: Final answer
    x = 12,318.52

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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.