Home / 13,318.96-18,380-7,350.48

Finding the Fourth Proportional to 13,318.96, 18,380 and 7,350.48

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Solution

The fourth proportional to 13,318.96, 18,380 and 7,350.48 is: 10,143.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.96 : 18,380 = 7,350.48 : x
  2. Step 2: Convert to fraction form
    13,318.96/18,380 = 7,350.48/x
  3. Step 3: Cross multiply
    13,318.96x = 18,380 × 7,350.48
  4. Step 4: Simplify right side
    13,318.96x = 135,101,822.40
  5. Step 5: Solve for x
    x = 135,101,822.40/13,318.96
  6. Step 6: Final answer
    x = 10,143.57

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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.