Home / 13,272.75-18,318.83-7,683.75

Finding the Fourth Proportional to 13,272.75, 18,318.83 and 7,683.75

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Solution

The fourth proportional to 13,272.75, 18,318.83 and 7,683.75 is: 10,604.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,272.75 : 18,318.83 = 7,683.75 : x
  2. Step 2: Convert to fraction form
    13,272.75/18,318.83 = 7,683.75/x
  3. Step 3: Cross multiply
    13,272.75x = 18,318.83 × 7,683.75
  4. Step 4: Simplify right side
    13,272.75x = 140,757,271.59
  5. Step 5: Solve for x
    x = 140,757,271.59/13,272.75
  6. Step 6: Final answer
    x = 10,604.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.