Home / 12,660.55-18,989.06-3,299.81

Finding the Fourth Proportional to 12,660.55, 18,989.06 and 3,299.81

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Solution

The fourth proportional to 12,660.55, 18,989.06 and 3,299.81 is: 4,949.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,660.55 : 18,989.06 = 3,299.81 : x
  2. Step 2: Convert to fraction form
    12,660.55/18,989.06 = 3,299.81/x
  3. Step 3: Cross multiply
    12,660.55x = 18,989.06 × 3,299.81
  4. Step 4: Simplify right side
    12,660.55x = 62,660,195.13
  5. Step 5: Solve for x
    x = 62,660,195.13/12,660.55
  6. Step 6: Final answer
    x = 4,949.25

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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.