Home / 13,839.61-20,743.67-12,170.47

Finding the Fourth Proportional to 13,839.61, 20,743.67 and 12,170.47

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Solution

The fourth proportional to 13,839.61, 20,743.67 and 12,170.47 is: 18,241.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,839.61 : 20,743.67 = 12,170.47 : x
  2. Step 2: Convert to fraction form
    13,839.61/20,743.67 = 12,170.47/x
  3. Step 3: Cross multiply
    13,839.61x = 20,743.67 × 12,170.47
  4. Step 4: Simplify right side
    13,839.61x = 252,460,213.42
  5. Step 5: Solve for x
    x = 252,460,213.42/13,839.61
  6. Step 6: Final answer
    x = 18,241.87

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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.