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Finding the Fourth Proportional to 13,993.42, 20,990.11 and 9,597.55

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Solution

The fourth proportional to 13,993.42, 20,990.11 and 9,597.55 is: 14,396.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,993.42 : 20,990.11 = 9,597.55 : x
  2. Step 2: Convert to fraction form
    13,993.42/20,990.11 = 9,597.55/x
  3. Step 3: Cross multiply
    13,993.42x = 20,990.11 × 9,597.55
  4. Step 4: Simplify right side
    13,993.42x = 201,453,630.23
  5. Step 5: Solve for x
    x = 201,453,630.23/13,993.42
  6. Step 6: Final answer
    x = 14,396.31

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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.