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Finding the Fourth Proportional to 16,912.40, 25,379.40 and 9,892.40

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Solution

The fourth proportional to 16,912.40, 25,379.40 and 9,892.40 is: 14,844.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,912.40 : 25,379.40 = 9,892.40 : x
  2. Step 2: Convert to fraction form
    16,912.40/25,379.40 = 9,892.40/x
  3. Step 3: Cross multiply
    16,912.40x = 25,379.40 × 9,892.40
  4. Step 4: Simplify right side
    16,912.40x = 251,063,176.56
  5. Step 5: Solve for x
    x = 251,063,176.56/16,912.40
  6. Step 6: Final answer
    x = 14,844.92

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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.