Home / 13,939.41-20,896.79-10,667.11

Finding the Fourth Proportional to 13,939.41, 20,896.79 and 10,667.11

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Solution

The fourth proportional to 13,939.41, 20,896.79 and 10,667.11 is: 15,991.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,939.41 : 20,896.79 = 10,667.11 : x
  2. Step 2: Convert to fraction form
    13,939.41/20,896.79 = 10,667.11/x
  3. Step 3: Cross multiply
    13,939.41x = 20,896.79 × 10,667.11
  4. Step 4: Simplify right side
    13,939.41x = 222,908,357.58
  5. Step 5: Solve for x
    x = 222,908,357.58/13,939.41
  6. Step 6: Final answer
    x = 15,991.23

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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.