Home / 13,991.60-20,935.56-7,839.92

Finding the Fourth Proportional to 13,991.60, 20,935.56 and 7,839.92

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Solution

The fourth proportional to 13,991.60, 20,935.56 and 7,839.92 is: 11,730.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,991.60 : 20,935.56 = 7,839.92 : x
  2. Step 2: Convert to fraction form
    13,991.60/20,935.56 = 7,839.92/x
  3. Step 3: Cross multiply
    13,991.60x = 20,935.56 × 7,839.92
  4. Step 4: Simplify right side
    13,991.60x = 164,133,115.56
  5. Step 5: Solve for x
    x = 164,133,115.56/13,991.60
  6. Step 6: Final answer
    x = 11,730.83

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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.