Home / 13,251.96-19,877.31-3,891.60

Finding the Fourth Proportional to 13,251.96, 19,877.31 and 3,891.60

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Solution

The fourth proportional to 13,251.96, 19,877.31 and 3,891.60 is: 5,837.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,251.96 : 19,877.31 = 3,891.60 : x
  2. Step 2: Convert to fraction form
    13,251.96/19,877.31 = 3,891.60/x
  3. Step 3: Cross multiply
    13,251.96x = 19,877.31 × 3,891.60
  4. Step 4: Simplify right side
    13,251.96x = 77,354,539.60
  5. Step 5: Solve for x
    x = 77,354,539.60/13,251.96
  6. Step 6: Final answer
    x = 5,837.21

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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.