Home / 12,316.28-18,476.16-3,993.50

Finding the Fourth Proportional to 12,316.28, 18,476.16 and 3,993.50

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Solution

The fourth proportional to 12,316.28, 18,476.16 and 3,993.50 is: 5,990.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,316.28 : 18,476.16 = 3,993.50 : x
  2. Step 2: Convert to fraction form
    12,316.28/18,476.16 = 3,993.50/x
  3. Step 3: Cross multiply
    12,316.28x = 18,476.16 × 3,993.50
  4. Step 4: Simplify right side
    12,316.28x = 73,784,544.96
  5. Step 5: Solve for x
    x = 73,784,544.96/12,316.28
  6. Step 6: Final answer
    x = 5,990.81

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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.