Home / 13,318.05-18,379.01-7,350.12

Finding the Fourth Proportional to 13,318.05, 18,379.01 and 7,350.12

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Solution

The fourth proportional to 13,318.05, 18,379.01 and 7,350.12 is: 10,143.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.05 : 18,379.01 = 7,350.12 : x
  2. Step 2: Convert to fraction form
    13,318.05/18,379.01 = 7,350.12/x
  3. Step 3: Cross multiply
    13,318.05x = 18,379.01 × 7,350.12
  4. Step 4: Simplify right side
    13,318.05x = 135,087,928.98
  5. Step 5: Solve for x
    x = 135,087,928.98/13,318.05
  6. Step 6: Final answer
    x = 10,143.22

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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.