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Finding the Fourth Proportional to 25,764.82, 38,668.42 and 10,990.42

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Solution

The fourth proportional to 25,764.82, 38,668.42 and 10,990.42 is: 16,494.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,764.82 : 38,668.42 = 10,990.42 : x
  2. Step 2: Convert to fraction form
    25,764.82/38,668.42 = 10,990.42/x
  3. Step 3: Cross multiply
    25,764.82x = 38,668.42 × 10,990.42
  4. Step 4: Simplify right side
    25,764.82x = 424,982,093.60
  5. Step 5: Solve for x
    x = 424,982,093.60/25,764.82
  6. Step 6: Final answer
    x = 16,494.67

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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.