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Finding the Fourth Proportional to 16,855.70, 25,255.20 and 13,332.20

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Solution

The fourth proportional to 16,855.70, 25,255.20 and 13,332.20 is: 19,975.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,855.70 : 25,255.20 = 13,332.20 : x
  2. Step 2: Convert to fraction form
    16,855.70/25,255.20 = 13,332.20/x
  3. Step 3: Cross multiply
    16,855.70x = 25,255.20 × 13,332.20
  4. Step 4: Simplify right side
    16,855.70x = 336,707,377.44
  5. Step 5: Solve for x
    x = 336,707,377.44/16,855.70
  6. Step 6: Final answer
    x = 19,975.88

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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.