Home / 13,318.74-18,379.92-7,350.66

Finding the Fourth Proportional to 13,318.74, 18,379.92 and 7,350.66

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Solution

The fourth proportional to 13,318.74, 18,379.92 and 7,350.66 is: 10,143.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.74 : 18,379.92 = 7,350.66 : x
  2. Step 2: Convert to fraction form
    13,318.74/18,379.92 = 7,350.66/x
  3. Step 3: Cross multiply
    13,318.74x = 18,379.92 × 7,350.66
  4. Step 4: Simplify right side
    13,318.74x = 135,104,542.75
  5. Step 5: Solve for x
    x = 135,104,542.75/13,318.74
  6. Step 6: Final answer
    x = 10,143.94

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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.