Home / 12,305.92-18,459.96-3,986.14

Finding the Fourth Proportional to 12,305.92, 18,459.96 and 3,986.14

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Solution

The fourth proportional to 12,305.92, 18,459.96 and 3,986.14 is: 5,979.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,305.92 : 18,459.96 = 3,986.14 : x
  2. Step 2: Convert to fraction form
    12,305.92/18,459.96 = 3,986.14/x
  3. Step 3: Cross multiply
    12,305.92x = 18,459.96 × 3,986.14
  4. Step 4: Simplify right side
    12,305.92x = 73,583,984.95
  5. Step 5: Solve for x
    x = 73,583,984.95/12,305.92
  6. Step 6: Final answer
    x = 5,979.56

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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.