Home / 10,318.43-15,399.67-9,321.97

Finding the Fourth Proportional to 10,318.43, 15,399.67 and 9,321.97

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Solution

The fourth proportional to 10,318.43, 15,399.67 and 9,321.97 is: 13,912.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,318.43 : 15,399.67 = 9,321.97 : x
  2. Step 2: Convert to fraction form
    10,318.43/15,399.67 = 9,321.97/x
  3. Step 3: Cross multiply
    10,318.43x = 15,399.67 × 9,321.97
  4. Step 4: Simplify right side
    10,318.43x = 143,555,311.27
  5. Step 5: Solve for x
    x = 143,555,311.27/10,318.43
  6. Step 6: Final answer
    x = 13,912.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.