Home / 12,425.98-18,638.99-3,658.85

Finding the Fourth Proportional to 12,425.98, 18,638.99 and 3,658.85

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Solution

The fourth proportional to 12,425.98, 18,638.99 and 3,658.85 is: 5,488.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,425.98 : 18,638.99 = 3,658.85 : x
  2. Step 2: Convert to fraction form
    12,425.98/18,638.99 = 3,658.85/x
  3. Step 3: Cross multiply
    12,425.98x = 18,638.99 × 3,658.85
  4. Step 4: Simplify right side
    12,425.98x = 68,197,177.98
  5. Step 5: Solve for x
    x = 68,197,177.98/12,425.98
  6. Step 6: Final answer
    x = 5,488.27

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Half scale
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Double scale
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Similar ratio
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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.