Home / 13,855.98-20,781.36-3,724.50

Finding the Fourth Proportional to 13,855.98, 20,781.36 and 3,724.50

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Solution

The fourth proportional to 13,855.98, 20,781.36 and 3,724.50 is: 5,586.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,855.98 : 20,781.36 = 3,724.50 : x
  2. Step 2: Convert to fraction form
    13,855.98/20,781.36 = 3,724.50/x
  3. Step 3: Cross multiply
    13,855.98x = 20,781.36 × 3,724.50
  4. Step 4: Simplify right side
    13,855.98x = 77,400,175.32
  5. Step 5: Solve for x
    x = 77,400,175.32/13,855.98
  6. Step 6: Final answer
    x = 5,586.05

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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.