Home / 12,491.36-18,736.68-3,257.36

Finding the Fourth Proportional to 12,491.36, 18,736.68 and 3,257.36

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Solution

The fourth proportional to 12,491.36, 18,736.68 and 3,257.36 is: 4,885.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,491.36 : 18,736.68 = 3,257.36 : x
  2. Step 2: Convert to fraction form
    12,491.36/18,736.68 = 3,257.36/x
  3. Step 3: Cross multiply
    12,491.36x = 18,736.68 × 3,257.36
  4. Step 4: Simplify right side
    12,491.36x = 61,032,111.96
  5. Step 5: Solve for x
    x = 61,032,111.96/12,491.36
  6. Step 6: Final answer
    x = 4,885.95

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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.