Home / 12,209.96-18,314.76-3,890.48

Finding the Fourth Proportional to 12,209.96, 18,314.76 and 3,890.48

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Solution

The fourth proportional to 12,209.96, 18,314.76 and 3,890.48 is: 5,835.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,209.96 : 18,314.76 = 3,890.48 : x
  2. Step 2: Convert to fraction form
    12,209.96/18,314.76 = 3,890.48/x
  3. Step 3: Cross multiply
    12,209.96x = 18,314.76 × 3,890.48
  4. Step 4: Simplify right side
    12,209.96x = 71,253,207.48
  5. Step 5: Solve for x
    x = 71,253,207.48/12,209.96
  6. Step 6: Final answer
    x = 5,835.66

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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.