Home / 18,958.86-28,382.81-13,317.01

Finding the Fourth Proportional to 18,958.86, 28,382.81 and 13,317.01

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Solution

The fourth proportional to 18,958.86, 28,382.81 and 13,317.01 is: 19,936.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,958.86 : 28,382.81 = 13,317.01 : x
  2. Step 2: Convert to fraction form
    18,958.86/28,382.81 = 13,317.01/x
  3. Step 3: Cross multiply
    18,958.86x = 28,382.81 × 13,317.01
  4. Step 4: Simplify right side
    18,958.86x = 377,974,027.06
  5. Step 5: Solve for x
    x = 377,974,027.06/18,958.86
  6. Step 6: Final answer
    x = 19,936.54

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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.