Home / 13,997.90-20,991.96-4,134.56

Finding the Fourth Proportional to 13,997.90, 20,991.96 and 4,134.56

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Solution

The fourth proportional to 13,997.90, 20,991.96 and 4,134.56 is: 6,200.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,997.90 : 20,991.96 = 4,134.56 : x
  2. Step 2: Convert to fraction form
    13,997.90/20,991.96 = 4,134.56/x
  3. Step 3: Cross multiply
    13,997.90x = 20,991.96 × 4,134.56
  4. Step 4: Simplify right side
    13,997.90x = 86,792,518.14
  5. Step 5: Solve for x
    x = 86,792,518.14/13,997.90
  6. Step 6: Final answer
    x = 6,200.40

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1.5x scale

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.