Home / 13,980.86-20,971.26-3,592.64

Finding the Fourth Proportional to 13,980.86, 20,971.26 and 3,592.64

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Solution

The fourth proportional to 13,980.86, 20,971.26 and 3,592.64 is: 5,388.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,980.86 : 20,971.26 = 3,592.64 : x
  2. Step 2: Convert to fraction form
    13,980.86/20,971.26 = 3,592.64/x
  3. Step 3: Cross multiply
    13,980.86x = 20,971.26 × 3,592.64
  4. Step 4: Simplify right side
    13,980.86x = 75,342,187.53
  5. Step 5: Solve for x
    x = 75,342,187.53/13,980.86
  6. Step 6: Final answer
    x = 5,388.95

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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.