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Finding the Fourth Proportional to 16,849.20, 25,273.80 and 12,912.60

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Solution

The fourth proportional to 16,849.20, 25,273.80 and 12,912.60 is: 19,368.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,849.20 : 25,273.80 = 12,912.60 : x
  2. Step 2: Convert to fraction form
    16,849.20/25,273.80 = 12,912.60/x
  3. Step 3: Cross multiply
    16,849.20x = 25,273.80 × 12,912.60
  4. Step 4: Simplify right side
    16,849.20x = 326,350,469.88
  5. Step 5: Solve for x
    x = 326,350,469.88/16,849.20
  6. Step 6: Final answer
    x = 19,368.90

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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.