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Finding the Fourth Proportional to 13,903.68, 20,834.58 and 8,350.92

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Solution

The fourth proportional to 13,903.68, 20,834.58 and 8,350.92 is: 12,513.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,903.68 : 20,834.58 = 8,350.92 : x
  2. Step 2: Convert to fraction form
    13,903.68/20,834.58 = 8,350.92/x
  3. Step 3: Cross multiply
    13,903.68x = 20,834.58 × 8,350.92
  4. Step 4: Simplify right side
    13,903.68x = 173,987,910.81
  5. Step 5: Solve for x
    x = 173,987,910.81/13,903.68
  6. Step 6: Final answer
    x = 12,513.80

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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.