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Finding the Fourth Proportional to 25,604.60, 38,406.90 and 7,136.60

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Solution

The fourth proportional to 25,604.60, 38,406.90 and 7,136.60 is: 10,704.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,604.60 : 38,406.90 = 7,136.60 : x
  2. Step 2: Convert to fraction form
    25,604.60/38,406.90 = 7,136.60/x
  3. Step 3: Cross multiply
    25,604.60x = 38,406.90 × 7,136.60
  4. Step 4: Simplify right side
    25,604.60x = 274,094,682.54
  5. Step 5: Solve for x
    x = 274,094,682.54/25,604.60
  6. Step 6: Final answer
    x = 10,704.90

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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.