Home / 12,486.30-18,727.38-3,719.16

Finding the Fourth Proportional to 12,486.30, 18,727.38 and 3,719.16

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Solution

The fourth proportional to 12,486.30, 18,727.38 and 3,719.16 is: 5,578.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,486.30 : 18,727.38 = 3,719.16 : x
  2. Step 2: Convert to fraction form
    12,486.30/18,727.38 = 3,719.16/x
  3. Step 3: Cross multiply
    12,486.30x = 18,727.38 × 3,719.16
  4. Step 4: Simplify right side
    12,486.30x = 69,650,122.60
  5. Step 5: Solve for x
    x = 69,650,122.60/12,486.30
  6. Step 6: Final answer
    x = 5,578.12

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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.