Home / 13,318.80-18,379.92-7,350.88

Finding the Fourth Proportional to 13,318.80, 18,379.92 and 7,350.88

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Solution

The fourth proportional to 13,318.80, 18,379.92 and 7,350.88 is: 10,144.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.80 : 18,379.92 = 7,350.88 : x
  2. Step 2: Convert to fraction form
    13,318.80/18,379.92 = 7,350.88/x
  3. Step 3: Cross multiply
    13,318.80x = 18,379.92 × 7,350.88
  4. Step 4: Simplify right side
    13,318.80x = 135,108,586.33
  5. Step 5: Solve for x
    x = 135,108,586.33/13,318.80
  6. Step 6: Final answer
    x = 10,144.20

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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.