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Finding the Fourth Proportional to 16,934.40, 25,358.40 and 13,478.40

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Solution

The fourth proportional to 16,934.40, 25,358.40 and 13,478.40 is: 20,183.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,934.40 : 25,358.40 = 13,478.40 : x
  2. Step 2: Convert to fraction form
    16,934.40/25,358.40 = 13,478.40/x
  3. Step 3: Cross multiply
    16,934.40x = 25,358.40 × 13,478.40
  4. Step 4: Simplify right side
    16,934.40x = 341,790,658.56
  5. Step 5: Solve for x
    x = 341,790,658.56/16,934.40
  6. Step 6: Final answer
    x = 20,183.22

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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.