Home / 14,379.56-21,569.60-3,991.32

Finding the Fourth Proportional to 14,379.56, 21,569.60 and 3,991.32

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Solution

The fourth proportional to 14,379.56, 21,569.60 and 3,991.32 is: 5,987.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,379.56 : 21,569.60 = 3,991.32 : x
  2. Step 2: Convert to fraction form
    14,379.56/21,569.60 = 3,991.32/x
  3. Step 3: Cross multiply
    14,379.56x = 21,569.60 × 3,991.32
  4. Step 4: Simplify right side
    14,379.56x = 86,091,175.87
  5. Step 5: Solve for x
    x = 86,091,175.87/14,379.56
  6. Step 6: Final answer
    x = 5,987.05

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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.