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Finding the Fourth Proportional to 16,906.60, 25,359.90 and 9,879.40

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Solution

The fourth proportional to 16,906.60, 25,359.90 and 9,879.40 is: 14,819.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,906.60 : 25,359.90 = 9,879.40 : x
  2. Step 2: Convert to fraction form
    16,906.60/25,359.90 = 9,879.40/x
  3. Step 3: Cross multiply
    16,906.60x = 25,359.90 × 9,879.40
  4. Step 4: Simplify right side
    16,906.60x = 250,540,596.06
  5. Step 5: Solve for x
    x = 250,540,596.06/16,906.60
  6. Step 6: Final answer
    x = 14,819.10

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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.