Home / 13,743.80-20,615.70-13,646.60

Finding the Fourth Proportional to 13,743.80, 20,615.70 and 13,646.60

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Solution

The fourth proportional to 13,743.80, 20,615.70 and 13,646.60 is: 20,469.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,743.80 : 20,615.70 = 13,646.60 : x
  2. Step 2: Convert to fraction form
    13,743.80/20,615.70 = 13,646.60/x
  3. Step 3: Cross multiply
    13,743.80x = 20,615.70 × 13,646.60
  4. Step 4: Simplify right side
    13,743.80x = 281,334,211.62
  5. Step 5: Solve for x
    x = 281,334,211.62/13,743.80
  6. Step 6: Final answer
    x = 20,469.90

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Similar ratio
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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.