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Finding the Fourth Proportional to 16,834.28, 25,212.47 and 8,385.40

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Solution

The fourth proportional to 16,834.28, 25,212.47 and 8,385.40 is: 12,558.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,834.28 : 25,212.47 = 8,385.40 : x
  2. Step 2: Convert to fraction form
    16,834.28/25,212.47 = 8,385.40/x
  3. Step 3: Cross multiply
    16,834.28x = 25,212.47 × 8,385.40
  4. Step 4: Simplify right side
    16,834.28x = 211,416,540.98
  5. Step 5: Solve for x
    x = 211,416,540.98/16,834.28
  6. Step 6: Final answer
    x = 12,558.69

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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.