Home / 13,318.83-18,379.67-7,350.57

Finding the Fourth Proportional to 13,318.83, 18,379.67 and 7,350.57

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Solution

The fourth proportional to 13,318.83, 18,379.67 and 7,350.57 is: 10,143.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.83 : 18,379.67 = 7,350.57 : x
  2. Step 2: Convert to fraction form
    13,318.83/18,379.67 = 7,350.57/x
  3. Step 3: Cross multiply
    13,318.83x = 18,379.67 × 7,350.57
  4. Step 4: Simplify right side
    13,318.83x = 135,101,014.16
  5. Step 5: Solve for x
    x = 135,101,014.16/13,318.83
  6. Step 6: Final answer
    x = 10,143.61

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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.