Home / 12,086.53-18,129.81-3,322.75

Finding the Fourth Proportional to 12,086.53, 18,129.81 and 3,322.75

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Solution

The fourth proportional to 12,086.53, 18,129.81 and 3,322.75 is: 4,984.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,086.53 : 18,129.81 = 3,322.75 : x
  2. Step 2: Convert to fraction form
    12,086.53/18,129.81 = 3,322.75/x
  3. Step 3: Cross multiply
    12,086.53x = 18,129.81 × 3,322.75
  4. Step 4: Simplify right side
    12,086.53x = 60,240,826.18
  5. Step 5: Solve for x
    x = 60,240,826.18/12,086.53
  6. Step 6: Final answer
    x = 4,984.13

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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.