Home / 12,885.82-19,328.74-3,525.14

Finding the Fourth Proportional to 12,885.82, 19,328.74 and 3,525.14

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Solution

The fourth proportional to 12,885.82, 19,328.74 and 3,525.14 is: 5,287.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,885.82 : 19,328.74 = 3,525.14 : x
  2. Step 2: Convert to fraction form
    12,885.82/19,328.74 = 3,525.14/x
  3. Step 3: Cross multiply
    12,885.82x = 19,328.74 × 3,525.14
  4. Step 4: Simplify right side
    12,885.82x = 68,136,496.90
  5. Step 5: Solve for x
    x = 68,136,496.90/12,885.82
  6. Step 6: Final answer
    x = 5,287.71

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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.