Home / 13,317.86-19,976.67-5,109.86

Finding the Fourth Proportional to 13,317.86, 19,976.67 and 5,109.86

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Solution

The fourth proportional to 13,317.86, 19,976.67 and 5,109.86 is: 7,664.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,317.86 : 19,976.67 = 5,109.86 : x
  2. Step 2: Convert to fraction form
    13,317.86/19,976.67 = 5,109.86/x
  3. Step 3: Cross multiply
    13,317.86x = 19,976.67 × 5,109.86
  4. Step 4: Simplify right side
    13,317.86x = 102,077,986.97
  5. Step 5: Solve for x
    x = 102,077,986.97/13,317.86
  6. Step 6: Final answer
    x = 7,664.74

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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.