Home / 13,971.56-20,949.44-12,780.02

Finding the Fourth Proportional to 13,971.56, 20,949.44 and 12,780.02

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Solution

The fourth proportional to 13,971.56, 20,949.44 and 12,780.02 is: 19,162.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,971.56 : 20,949.44 = 12,780.02 : x
  2. Step 2: Convert to fraction form
    13,971.56/20,949.44 = 12,780.02/x
  3. Step 3: Cross multiply
    13,971.56x = 20,949.44 × 12,780.02
  4. Step 4: Simplify right side
    13,971.56x = 267,734,093.54
  5. Step 5: Solve for x
    x = 267,734,093.54/13,971.56
  6. Step 6: Final answer
    x = 19,162.80

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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.