Home / 13,169.39-19,755.90-5,376.38

Finding the Fourth Proportional to 13,169.39, 19,755.90 and 5,376.38

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Solution

The fourth proportional to 13,169.39, 19,755.90 and 5,376.38 is: 8,065.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,169.39 : 19,755.90 = 5,376.38 : x
  2. Step 2: Convert to fraction form
    13,169.39/19,755.90 = 5,376.38/x
  3. Step 3: Cross multiply
    13,169.39x = 19,755.90 × 5,376.38
  4. Step 4: Simplify right side
    13,169.39x = 106,215,126.86
  5. Step 5: Solve for x
    x = 106,215,126.86/13,169.39
  6. Step 6: Final answer
    x = 8,065.31

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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.