Home / 12,893.12-19,339.68-3,658.88

Finding the Fourth Proportional to 12,893.12, 19,339.68 and 3,658.88

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Solution

The fourth proportional to 12,893.12, 19,339.68 and 3,658.88 is: 5,488.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,893.12 : 19,339.68 = 3,658.88 : x
  2. Step 2: Convert to fraction form
    12,893.12/19,339.68 = 3,658.88/x
  3. Step 3: Cross multiply
    12,893.12x = 19,339.68 × 3,658.88
  4. Step 4: Simplify right side
    12,893.12x = 70,761,568.36
  5. Step 5: Solve for x
    x = 70,761,568.36/12,893.12
  6. Step 6: Final answer
    x = 5,488.32

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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.