Home / 13,756.72-20,635.04-4,991.60

Finding the Fourth Proportional to 13,756.72, 20,635.04 and 4,991.60

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Solution

The fourth proportional to 13,756.72, 20,635.04 and 4,991.60 is: 7,487.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,756.72 : 20,635.04 = 4,991.60 : x
  2. Step 2: Convert to fraction form
    13,756.72/20,635.04 = 4,991.60/x
  3. Step 3: Cross multiply
    13,756.72x = 20,635.04 × 4,991.60
  4. Step 4: Simplify right side
    13,756.72x = 103,001,865.66
  5. Step 5: Solve for x
    x = 103,001,865.66/13,756.72
  6. Step 6: Final answer
    x = 7,487.39

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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.