Home / 13,318.96-19,981.32-3,958.60

Finding the Fourth Proportional to 13,318.96, 19,981.32 and 3,958.60

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Solution

The fourth proportional to 13,318.96, 19,981.32 and 3,958.60 is: 5,938.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.96 : 19,981.32 = 3,958.60 : x
  2. Step 2: Convert to fraction form
    13,318.96/19,981.32 = 3,958.60/x
  3. Step 3: Cross multiply
    13,318.96x = 19,981.32 × 3,958.60
  4. Step 4: Simplify right side
    13,318.96x = 79,098,053.35
  5. Step 5: Solve for x
    x = 79,098,053.35/13,318.96
  6. Step 6: Final answer
    x = 5,938.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.